Add Delete to right-click context menu of feature tree operations

[pierremtb]

Maps a new context menu item to a new Feature Tree Machine state to handle deletion.

Todo before ready:

• Convert to promise actor
• Check if Add helix type to the artifact graph #5311 is needed or would be better for helix deletion

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Name	Status	Preview	Updated (UTC)
modeling-app	✅ Ready (Inspect)	Visit Preview	Feb 7, 2025 9:58pm

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 86.04%. Comparing base (110037d) to head (1200d9b).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #5302   +/-   ##
=======================================
  Coverage   86.04%   86.04%           
=======================================
  Files          92       92           
  Lines       33250    33250           
=======================================
  Hits        28609    28609           
  Misses       4641     4641           

Flag	Coverage Δ
wasm-lib	86.04% <ø> (ø)

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