Remove ConnectionMsg variant connection{Try, Ack} Box Wrap

[DaviRain-Su]

Closes: #258

Description

---

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

Base: 65.31% // Head: 64.84% // Decreases project coverage by -0.47% ⚠️

Coverage data is based on head (fbcd63a) compared to base (3464923).
Patch coverage: 52.50% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #285      +/-   ##
==========================================
- Coverage   65.31%   64.84%   -0.48%     
==========================================
  Files         125      126       +1     
  Lines       13210    13852     +642     
==========================================
+ Hits         8628     8982     +354     
- Misses       4582     4870     +288     

Impacted Files	Coverage Δ
...s/ibc/src/clients/ics07_tendermint/host_helpers.rs	0.00% <ø> (ø)
crates/ibc/src/core/handler.rs	0.00% <0.00%> (ø)
crates/ibc/src/core/ics03_connection/msgs.rs	100.00% <ø> (ø)
crates/ibc/src/core/ics26_routing/handler.rs	91.11% <ø> (ø)
crates/ibc/src/core/ics26_routing/msgs.rs	0.99% <0.00%> (ø)
...rc/core/ics03_connection/handler/conn_open_init.rs	57.84% <15.68%> (-42.16%)	⬇️
crates/ibc/src/mock/context.rs	70.41% <23.35%> (-5.52%)	⬇️
crates/ibc/src/core/context.rs	32.07% <50.00%> (+22.50%)	⬆️
...core/ics03_connection/handler/conn_open_confirm.rs	77.50% <65.64%> (-22.50%)	⬇️
...src/core/ics03_connection/handler/conn_open_ack.rs	78.05% <66.87%> (-14.51%)	⬇️
... and 3 more

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[plafer]

Thank you again for the contribution!

Regarding the CI failure, could you make sure that the branch is up to date with main?

[plafer]

🎉