`max_extrinsic` in `BlockWeight` limit per class should take into account `base_block`

[gui1117]

when computing what is the maximal weight for an extrinsic of a given class we have to manually substract the base_block weight.

https://github.com/paritytech/substrate/blob/fcf950ca4906bed0b8118d6b40fa8a8a0acf9425/bin/node/runtime/src/lib.rs#L512-L515

Instead max_extrinsic should take into account that the weight consume by base_block is not available:

https://github.com/paritytech/substrate/blob/fcf950ca4906bed0b8118d6b40fa8a8a0acf9425/frame/system/src/limits.rs#L406-L416

[stale]

Hey, is anyone still working on this? Due to the inactivity this issue has been automatically marked as stale. It will be closed if no further activity occurs. Thank you for your contributions.

[gui1117]

still sensible to me