pallet-ibc: adjust rate limit based on decimal places

[blasrodri]

• PR title is my best effort to provide summary of changes and has clear text to be part of release notes
• I marked PR by misc label if it should not be in release notes
• I have linked Zenhub/Github or any other reference item if one exists
• I was clear on what type of deployment required to release my changes (node, runtime, contract, indexer, on chain operation, frontend, infrastructure) if any in PR title or description
• I waited and did best effort for pr-workflow-check / draft-release-check to finish with success(green check mark) with my changes
• I have added at least one reviewer in reviewers list
• I tagged(@) or used other form of notification of one person who I think can handle best review of this PR

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[dzmitry-lahoda]

oh no, @blasrodri you tried to brick us

native=/build/source/target/release/build/lz4-sys-eb1914ac8164e994/out`
2023-05-18T13:18:13.0380459Z composable-clippy> error: used `unwrap()` on `a Result` value
2023-05-18T13:18:13.0382855Z composable-clippy>    --> parachain/runtime/composable/src/ibc.rs:141:4
2023-05-18T13:18:13.0384463Z composable-clippy>     |
2023-05-18T13:18:13.0386662Z composable-clippy> 141 | /             <<Runtime as pallet_ibc::Config>::IbcDenomToAssetIdConversion as DenomToAssetId<
2023-05-18T13:18:13.0388047Z composable-clippy> 142 | |                 Runtime,
2023-05-18T13:18:13.0436443Z composable-clippy> 143 | |             >>::from_denom_to_asset_id(&token.denom.to_string())
2023-05-18T13:18:13.0478424Z composable-clippy> 144 | |             .unwrap();
2023-05-18T13:18:13.0480312Z composable-clippy>     | |_____________________^
2023-05-18T13:18:13.0482092Z composable-clippy>     |
2023-05-18T13:18:13.0483882Z composable-clippy>     = help: if you don't want to handle the `Err` case gracefully, consider using `expect()` to provide a better panic message
2023-05-18T13:18:13.0486186Z composable-clippy>     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unwrap_used
2023-05-18T13:18:13.0488426Z composable-clippy> note: the lint level is defined here
2023-05-18T13:18:13.0490401Z composable-clippy>    --> parachain/runtime/composable/src/lib.rs:8:3
2023-05-18T13:18:13.0491530Z composable-clippy>     |
2023-05-18T13:18:13.0492927Z composable-clippy> 8   |         clippy::unwrap_used,
2023-05-18T13:18:13.0494730Z composable-clippy>     |         ^^^^^^^^^^^^^^^^^^^
2023-05-18T13:18:13.0496268Z composable-clippy> error: use of a disallowed method `core::result::Result::unwrap`
2023-05-18T13:18:13.0497257Z composable-clippy>    --> parachain/runtime/composable/src/ibc.rs:141:4
2023-05-18T13:18:13.0498072Z composable-clippy>     |
2023-05-18T13:18:13.0500004Z composable-clippy> 141 | /             <<Runtime as pallet_ibc::Config>::IbcDenomToAssetIdConversion as DenomToAssetId<
2023-05-18T13:18:13.0501246Z composable-clippy> 142 | |                 Runtime,
2023-05-18T13:18:13.0915885Z composable-clippy> 143 | |             >>::from_denom_to_asset_id(&token.denom.to_string())
2023-05-18T13:18:13.0996226Z composable-clippy> 144 | |             .unwrap();
2023-05-18T13:18:13.1075340Z composable-clippy>     | |_____________________^
2023-05-18T13:18:13.1154877Z composable-clippy>     |
2023-05-18T13:18:13.1235537Z composable-clippy>     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#disallowed_methods
2023-05-18T13:18:13.1314541Z composable-clippy> note: the lint level is defined here
2023-05-18T13:18:13.1394850Z composable-clippy>    --> parachain/runtime/composable/src/lib.rs:4:3
2023-05-18T13:18:13.1474838Z composable-clippy>     |
2023-05-18T13:18:13.1555565Z composable-clippy> 4   |         clippy::disallowed_methods,
2023-05-18T13:18:13.1636054Z composable-clippy>     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
2023-05-18T13:18:14.9282148Z composable-clippy> error: could not compile `composable-runtime` due to 2 previous errors

either use if let or do expect with explanation of prove

[blasrodri]

oh no, @blasrodri you tried to brick us

native=/build/source/target/release/build/lz4-sys-eb1914ac8164e994/out`
2023-05-18T13:18:13.0380459Z composable-clippy> error: used `unwrap()` on `a Result` value
2023-05-18T13:18:13.0382855Z composable-clippy>    --> parachain/runtime/composable/src/ibc.rs:141:4
2023-05-18T13:18:13.0384463Z composable-clippy>     |
2023-05-18T13:18:13.0386662Z composable-clippy> 141 | /             <<Runtime as pallet_ibc::Config>::IbcDenomToAssetIdConversion as DenomToAssetId<
2023-05-18T13:18:13.0388047Z composable-clippy> 142 | |                 Runtime,
2023-05-18T13:18:13.0436443Z composable-clippy> 143 | |             >>::from_denom_to_asset_id(&token.denom.to_string())
2023-05-18T13:18:13.0478424Z composable-clippy> 144 | |             .unwrap();
2023-05-18T13:18:13.0480312Z composable-clippy>     | |_____________________^
2023-05-18T13:18:13.0482092Z composable-clippy>     |
2023-05-18T13:18:13.0483882Z composable-clippy>     = help: if you don't want to handle the `Err` case gracefully, consider using `expect()` to provide a better panic message
2023-05-18T13:18:13.0486186Z composable-clippy>     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unwrap_used
2023-05-18T13:18:13.0488426Z composable-clippy> note: the lint level is defined here
2023-05-18T13:18:13.0490401Z composable-clippy>    --> parachain/runtime/composable/src/lib.rs:8:3
2023-05-18T13:18:13.0491530Z composable-clippy>     |
2023-05-18T13:18:13.0492927Z composable-clippy> 8   |         clippy::unwrap_used,
2023-05-18T13:18:13.0494730Z composable-clippy>     |         ^^^^^^^^^^^^^^^^^^^
2023-05-18T13:18:13.0496268Z composable-clippy> error: use of a disallowed method `core::result::Result::unwrap`
2023-05-18T13:18:13.0497257Z composable-clippy>    --> parachain/runtime/composable/src/ibc.rs:141:4
2023-05-18T13:18:13.0498072Z composable-clippy>     |
2023-05-18T13:18:13.0500004Z composable-clippy> 141 | /             <<Runtime as pallet_ibc::Config>::IbcDenomToAssetIdConversion as DenomToAssetId<
2023-05-18T13:18:13.0501246Z composable-clippy> 142 | |                 Runtime,
2023-05-18T13:18:13.0915885Z composable-clippy> 143 | |             >>::from_denom_to_asset_id(&token.denom.to_string())
2023-05-18T13:18:13.0996226Z composable-clippy> 144 | |             .unwrap();
2023-05-18T13:18:13.1075340Z composable-clippy>     | |_____________________^
2023-05-18T13:18:13.1154877Z composable-clippy>     |
2023-05-18T13:18:13.1235537Z composable-clippy>     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#disallowed_methods
2023-05-18T13:18:13.1314541Z composable-clippy> note: the lint level is defined here
2023-05-18T13:18:13.1394850Z composable-clippy>    --> parachain/runtime/composable/src/lib.rs:4:3
2023-05-18T13:18:13.1474838Z composable-clippy>     |
2023-05-18T13:18:13.1555565Z composable-clippy> 4   |         clippy::disallowed_methods,
2023-05-18T13:18:13.1636054Z composable-clippy>     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
2023-05-18T13:18:14.9282148Z composable-clippy> error: could not compile `composable-runtime` due to 2 previous errors

either use if let or do expect with explanation of prove

oh shit lol

[blasrodri]

Added a commit that removes .unwrap()