feat: close sliding panel on escape key, issue #8225

[reginapizza]

Closes #8225
NOTE: need to merge argoproj/argo-ui#184 first

Checklist:

• Either (a) I've created an enhancement proposal and discussed it with the community, (b) this is a bug fix, or (c) this does not need to be in the release notes.
• The title of the PR states what changed and the related issues number (used for the release note).
• I've included "Closes [ISSUE #]" or "Fixes [ISSUE #]" in the description to automatically close the associated issue.
• I've updated both the CLI and UI to expose my feature, or I plan to submit a second PR with them.
• Does this PR require documentation updates?
• I've updated documentation as required by this PR.
• Optional. My organization is added to USERS.md.
• I have signed off all my commits as required by DCO
• I have written unit and/or e2e tests for my change. PRs without these are unlikely to be merged.
• My build is green (troubleshooting builds).

[codecov]

Codecov Report

Merging #8465 (de5ba45) into master (4265746) will decrease coverage by 0.04%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #8465      +/-   ##
==========================================
- Coverage   45.54%   45.49%   -0.05%     
==========================================
  Files         219      219              
  Lines       25893    25893              
==========================================
- Hits        11792    11781      -11     
- Misses      12459    12473      +14     
+ Partials     1642     1639       -3     

Impacted Files	Coverage Δ
applicationset/services/scm_provider/github.go	63.52% <0.00%> (-17.65%)	⬇️
applicationset/services/scm_provider/utils.go	87.75% <0.00%> (+4.08%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 4265746...de5ba45. Read the comment docs.

[rbreeze]

LGTM once Argo UI PR is merged