fix: BROS-464: Vector region selection

[nick-skriabin]

This PR introduces new selection and transformation behavior to Vector tag.

Previously:

• Users weren't able to transform multiple Vectors at the same time
• UX for Vector selection was confusing -- users had to cmd or ctrl-click on the shape to select all the points and be able to transform the vector

Now:

• Users can select multiple shapes and transform them together
• Users enter the "transform" state by default when selecting Vector and can double-click on the shape to start interacting with individual points

A little demo showcasing the changes:

vector-selection.mp4

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[codecov]

Codecov Report

❌ Patch coverage is 2.44565% with 359 lines in your changes missing coverage. Please review.
✅ Project coverage is 59.07%. Comparing base (3911302) to head (4784cf1).

Files with missing lines	Patch %	Lines
.../editor/src/components/KonvaVector/KonvaVector.tsx	0.00%	295 Missing ⚠️
web/libs/editor/src/regions/VectorRegion.jsx	1.63%	60 Missing ⚠️
...c/components/ImageTransformer/ImageTransformer.jsx	80.00%	2 Missing ⚠️
...c/components/KonvaVector/VectorSelectionTracker.ts	0.00%	1 Missing ⚠️
...nents/KonvaVector/components/VectorTransformer.tsx	0.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##           develop    #8636       +/-   ##
============================================
+ Coverage    36.54%   59.07%   +22.52%     
============================================
  Files          717      551      -166     
  Lines        54950    39292    -15658     
  Branches      9036    10389     +1353     
============================================
+ Hits         20081    23210     +3129     
+ Misses       34866    16079    -18787     
  Partials         3        3               

Flag	Coverage Δ
lsf-e2e	52.50% <2.17%> (?)
lsf-integration	50.27% <0.27%> (?)
lsf-unit	8.27% <0.27%> (-0.08%)	⬇️
pytests	?

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[hlomzik]

/git merge

Workflow run
Successfully merged: create mode 100644 web/libs/ui/src/assets/icons/webhook.svg