Return error for uninitialized connection end or channel end query result

[ancazamfir]

Closes: #875
Closes: #920

Description

• changed query_channel() and query_connection() to return error if the end is in Uninitialized State
• the change revealed a bug in the height of a channel query when checking state before sending acknowledgment packets. The old query was done with a height of the counterparty chain but because it was returning an Uninitialized channel the check for channel close was passing.
• new output:

$ hermes query connection end ibc-0 connection-100
...
Error: Query error occurred (failed to query for connection 'connection-100'): connection does not exist

$ hermes query channel end ibc-0 transfer channel-100
...
Error: Query error occurred (failed to query for port 'transfer' channel 'channel-100'): channel does not exist

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For contributor use:

• Updated the Unreleased section of CHANGELOG.md with the issue.
• If applicable: Unit tests written, added test to CI.
• Linked to Github issue with discussion and accepted design OR link to spec that describes this work.
• Updated relevant documentation (docs/) and code comments.
• Re-reviewed Files changed in the Github PR explorer.