feat: Plugin loader should prioritize new plugin format, when available

[vbabich]

We should be able to use both new and legacy plugin format in the same module, and plugin loader should prioritize the new format.

[codecov]

Codecov Report

Attention: Patch coverage is 95.23810% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 46.03%. Comparing base (d91d833) to head (8b9a753).

Files	Patch %	Lines
packages/app-utils/src/plugins/PluginUtils.tsx	92.85%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1846      +/-   ##
==========================================
+ Coverage   46.00%   46.03%   +0.03%     
==========================================
  Files         635      635              
  Lines       37913    37931      +18     
  Branches     9553     9561       +8     
==========================================
+ Hits        17441    17461      +20     
+ Misses      20418    20416       -2     
  Partials       54       54              

Flag	Coverage Δ
unit	46.03% <95.23%> (+0.03%)	⬆️

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