Fix Geometry Edit in Feature Selection

[juandjara]

Description

Shortcut: https://app.shortcut.com/cartoteam/story/394555/feature-selection-edition-doesn-t-work

This PR fixes a bug with edition of geometries introduced in PR #847
Turns out nebula.gl features are immutable objects (enforced with the Object constructor) and cannot be edited in-place

Type of change

• Fix

Acceptance

Please describe how to validate the feature or fix

1. open carto workspace
2. open or create a map
3. add some data if none is present
4. add a feature selection mask
5. try to edit the mask or switch to a different edit mode
6. feature selection tool should stay responsive and respond to edits

If feature deals with theme / UI or internal elements used also in CARTO 3, please also add a note on how to do acceptance on that part.

Basic checklist

• Good PR name
• Shortcut link
• Changelog entry
• Just one issue per PR
• GitHub labels
• Proper status & reviewers
• Tests
• Documentation

[github-actions]

Pull Request Test Coverage Report for Build 8265075577

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 1 unchanged line in 1 file lost coverage.
• Overall coverage increased (+0.01%) to 68.534%

---

Files with Coverage Reduction	New Missed Lines	%
packages/react-widgets/src/layers/FeatureSelectionLayer.js	1	56.18%

Totals
Change from base Build 8201096907:	0.01%
Covered Lines:	2644
Relevant Lines:	3516

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💛 - Coveralls

[github-actions]

Visit the preview URL for this PR (updated for commit 64f5fe4):

https://cartodb-fb-storybook-react-dev--pr854-fix-feature-sele-661b5bp8.web.app

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