feat: DH-21093: Make usePersistentState available to all panels

[mattrunyon]

Removed extendState from GL because we did not use it (and don't in DHE). It also tripped me up because it mutates the existing object, so calling it does not trigger a state change for Dashboard which means it doesn't actually save any extended state on its own.

[codecov]

Codecov Report

❌ Patch coverage is 38.23529% with 21 lines in your changes missing coverage. Please review.
✅ Project coverage is 45.96%. Comparing base (656c090) to head (4cdfc20).

Files with missing lines	Patch %	Lines
.../golden-layout/src/utils/ReactComponentHandler.tsx	0.00%	11 Missing ⚠️
...kages/golden-layout/src/container/ItemContainer.ts	0.00%	5 Missing ⚠️
packages/dashboard/src/DashboardLayout.tsx	50.00%	2 Missing and 1 partial ⚠️
packages/dashboard/src/DashboardPanelWrapper.tsx	83.33%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2595      +/-   ##
==========================================
+ Coverage   45.54%   45.96%   +0.42%     
==========================================
  Files         771      771              
  Lines       43636    43649      +13     
  Branches    11041    11229     +188     
==========================================
+ Hits        19872    20065     +193     
+ Misses      23748    23539     -209     
- Partials       16       45      +29     

Flag	Coverage Δ
unit	45.96% <38.23%> (+0.42%)	⬆️

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[mofojed]

Fix the e2e tests then this looks good

[mattrunyon]

Tested w/ ACL editor (which was the reason the check needed to be added in _gotReactComponent). It is a functional component w/ forwardRef which triggers the logic. It's actually not an issue any more (only was w/ my initial iteration which patched the state into the same object as the class component persisted state). But the check and types are more accurate so I'm leaving them. The e2e was failing because the check was looking for componentWillUpdate to exist. There are other example utils that check component.isReactComponent, but the types didn't like that narrowing at all and instanceof Component seems to work.