fix(pdk-admin): declare peerDependency on @myparcel-dev/vue-form-builder and vue

[NabDevs]

• Declare peerDependencies: @myparcel-dev/vue-form-builder and vue to ensure single instances in consumers\n- Removes direct dependency to avoid duplicate installs\n\nFollow-up: once vue-form-builder publishes default MagicForm export, we can bump and complete WC plugin migration.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 53.23%. Comparing base (37f8e98) to head (d7d6779).
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
...ps/admin/src/forms/pluginSettings/createFormTab.ts	0.00%	2 Missing ⚠️
...c/forms/pluginSettings/createPluginSettingsForm.ts	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #291      +/-   ##
==========================================
- Coverage   53.24%   53.23%   -0.01%     
==========================================
  Files         691      691              
  Lines        9746     9747       +1     
  Branches      694      694              
==========================================
  Hits         5189     5189              
- Misses       3872     3873       +1     
  Partials      685      685              

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