chore: Add Embed Modal extension override and tests

[geido]

SUMMARY

Adds an extension to override the whole Embed Modal.
Adds missing unit tests and moves the component to its own dir.

BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF

N.A.

TESTING INSTRUCTIONS

CI should pass

ADDITIONAL INFORMATION

• Has associated issue:
• Required feature flags:
• Changes UI
• Includes DB Migration (follow approval process in SIP-59)
  • Migration is atomic, supports rollback & is backwards-compatible
  • Confirm DB migration upgrade and downgrade tested
  • Runtime estimates and downtime expectations provided
• Introduces new feature or API
• Removes existing feature or API

[codecov]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (d34874c) 69.48% compared to head (c3e94ce) 69.53%.
Report is 58 commits behind head on master.

Files	Patch %	Lines
...d/src/dashboard/components/EmbeddedModal/index.tsx	75.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #26759      +/-   ##
==========================================
+ Coverage   69.48%   69.53%   +0.05%     
==========================================
  Files        1894     1894              
  Lines       74138    74655     +517     
  Branches     8243     8359     +116     
==========================================
+ Hits        51514    51913     +399     
- Misses      20555    20648      +93     
- Partials     2069     2094      +25     

Flag	Coverage Δ
javascript	57.11% <75.00%> (+0.24%)	⬆️

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[betodealmeida]

Lovely!

[michael-s-molina]

Thanks for the PR and added tests @geido! I left some non-blocking comments that I think may help with readability and standardization.

[michael-s-molina]

LGTM