imp(ics24)!: enhancements and fixes to ChainId impl and validation

[Farhad-Shabani]

Closes: #761

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PR author checklist:

• Added changelog entry, using unclog.
• Added tests.
• Linked to GitHub issue.
• Updated code comments and documentation (e.g., docs/).
• Tagged one reviewer who will be the one responsible for shepherding this PR.

Reviewer checklist:

• Reviewed Files changed in the GitHub PR explorer.
• Manually tested (in case integration/unit/mock tests are absent).

[codecov]

Codecov Report

Patch coverage: 94.30% and project coverage change: -2.09% ⚠️

Comparison is base (5784770) 73.41% compared to head (963b7be) 71.32%.
Report is 4 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #762      +/-   ##
==========================================
- Coverage   73.41%   71.32%   -2.09%     
==========================================
  Files         125      124       -1     
  Lines       16127    14796    -1331     
==========================================
- Hits        11839    10553    -1286     
+ Misses       4288     4243      -45     

Files Changed	Coverage Δ
...ibc/src/core/ics02_client/handler/update_client.rs	96.15% <ø> (ø)
...s/ibc/src/hosts/tendermint/validate_self_client.rs	0.00% <0.00%> (ø)
crates/ibc/src/mock/ics18_relayer/context.rs	65.00% <ø> (ø)
crates/ibc/src/clients/ics07_tendermint/error.rs	29.16% <75.00%> (+9.16%)	⬆️
crates/ibc/src/core/ics24_host/identifier.rs	67.39% <92.75%> (+9.42%)	⬆️
...s/ibc/src/clients/ics07_tendermint/client_state.rs	72.27% <100.00%> (-0.57%)	⬇️
crates/ibc/src/clients/ics07_tendermint/header.rs	71.56% <100.00%> (+0.27%)	⬆️
...s/ibc/src/clients/ics07_tendermint/misbehaviour.rs	68.08% <100.00%> (-0.61%)	⬇️
...src/core/ics03_connection/handler/conn_open_ack.rs	96.62% <100.00%> (ø)
...src/core/ics03_connection/handler/conn_open_try.rs	94.02% <100.00%> (ø)
... and 3 more

... and 14 files with indirect coverage changes

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[plafer]

LGTM! Let's run the integration tests before we merge though