[Editor] End active touch gestures on destroy

[calixteman]

Destroy an editor's touch manager before detaching it so onPinchEnd can restore pointer events and record any resize.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.09%. Comparing base (7364bca) to head (8f487ef).

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #21744      +/-   ##
==========================================
- Coverage   90.09%   90.09%   -0.01%     
==========================================
  Files         264      264              
  Lines       67234    67237       +3     
==========================================
+ Hits        60574    60576       +2     
- Misses       6660     6661       +1     

Flag	Coverage Δ
browsertest	66.34% <0.00%> (-0.01%)	⬇️
fonttest	8.99% <ø> (ø)
integrationtest	69.30% <100.00%> (-0.01%)	⬇️
unittest	58.23% <81.81%> (+0.01%)	⬆️
unittestcli	56.58% <0.00%> (-0.02%)	⬇️

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[timvandermeij]

Thank you for fixing this!