fix: MST warning on closing map component

[kswenson]

[PT-187628522]

1. The warning indicates that the error occurs in the selection method at DataConfigurationModel line 222.
2. Adding if (!isAlive(self)) debugger at that line yields the stack trace in the enclosed screen shot.
3. Clicking on the runReaction_ line in the debugger results in the following scope section of the debugger, as seen in the next screen shot.
4. From this, we can see that the reaction in question is named observerMapPointLayer.
5. This string doesn't appear in the code because that's the name given to observer components, so the reaction in question is the MapPointLayer component which is an observer.
6. The fix is to test isAlive before dereferencing the dataConfiguration because there isn't a good way to tell an observer component to stop observing.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.20%. Comparing base (8087dc0) to head (3268d57).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1269      +/-   ##
==========================================
+ Coverage   85.08%   85.20%   +0.12%     
==========================================
  Files         482      482              
  Lines       22959    22960       +1     
  Branches     6116     5736     -380     
==========================================
+ Hits        19534    19564      +30     
+ Misses       3260     3231      -29     
  Partials      165      165              

Flag	Coverage Δ
cypress	73.83% <ø> (+0.15%)	⬆️
jest	52.15% <ø> (+<0.01%)	⬆️

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[bfinzer]

👍🏻LGTM
I find this to be a subtle bug! Thanks for tracking it down.