fix: Download worker and monaco initializing multiple times in dev

[mattrunyon]

I noticed my console logs spammed with Registering service worker in dev mode (with dh.ui tables/panels with tables) and multiple service workers in the sources tab.

This doesn't seem to be an issue in prod, so I'm guessing it has something to do with React dev mode. I also think previously these initializers were actually at the root, but now they are under a bunch of contexts that can be changed and cause the dev re-render.

Didn't see the same behavior in enterprise where these inits are either under a useEffect or above the contexts at the root.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 14 lines in your changes missing coverage. Please review.

Project coverage is 47.22%. Comparing base (ad4205d) to head (38e7023).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
packages/code-studio/src/AppRoot.tsx	0.00%	9 Missing ⚠️
...ages/code-studio/src/styleguide/StyleGuideRoot.tsx	0.00%	5 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2452      +/-   ##
==========================================
- Coverage   47.22%   47.22%   -0.01%     
==========================================
  Files         718      718              
  Lines       39607    39609       +2     
  Branches     9909    10098     +189     
==========================================
  Hits        18706    18706              
+ Misses      20890    20849      -41     
- Partials       11       54      +43     

Flag	Coverage Δ
unit	47.22% <0.00%> (-0.01%)	⬇️

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