Update the hovered item when panning any viewport canvas

[mstange]

Production | Deploy preview

Fixes #3807.

[mstange]

Hmm, fails tests. And the shallow equal stuff seems fishy. And the unsafe also seems fishy.

[codecov]

Codecov Report

❌ Patch coverage is 85.71429% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 85.45%. Comparing base (c886717) to head (1244dfc).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/components/shared/chart/Canvas.tsx	85.71%	2 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #5903   +/-   ##
=======================================
  Coverage   85.45%   85.45%           
=======================================
  Files         321      321           
  Lines       32139    32141    +2     
  Branches     8850     8763   -87     
=======================================
+ Hits        27463    27465    +2     
  Misses       4241     4241           
  Partials      435      435           

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[mstange]

Hmm, fails tests. And the shallow equal stuff seems fishy. And the unsafe also seems fishy.

The test failure was because we were using the initial offset values 0,0 to make something hovered before the mouse even entered the canvas. Fixed now. The other things I mentioned are pre-existing and we don't need to fix them here.