Dynamic filter widget: Registered interactions clean up after any target node gets deleted #12017

[rowheat02]

Description

This PR fixes filter widget interactions cleanup after layer deletion.

Problem: When a linked map layer is deleted, stale interaction entries can remain in the filter widget and still be processed, causing an unstable state.

Implemented solution: on REMOVE_NODE for layers, the interactions epic now removes filter-widget interactions that target the deleted map.layers[layerId]. This ensures cleanup happens immediately after deletion and no dead interaction is processed.

Screen.Recording.2026-03-03.at.16.34.14.mov

Please check if the PR fulfills these requirements

• The commit message follows our guidelines: https://github.com/geosolutions-it/MapStore2/wiki/Contributing-to-MapStore
• Tests for the changes have been added
• Docs have been added / updated

What kind of change does this PR introduce? (check one with "x", remove the others)

• Bugfix

Issue

What is the current behavior?
#12017
After deleting a connected layer, stale interactions may remain in filter widget interactions, and dead interactions can still be processed, resulting unstable system.

What is the new behavior?
After deleting a layer, related filter-widget interactions are cleaned up. No dead interaction will be processed.

Breaking change

Does this PR introduce a breaking change? (check one with "x", remove the other)

• Yes, and I documented them in migration notes
• No

Other useful information

[offtherailz]

@ElenaGallo, could you please test this on DEV ? Thank you

[offtherailz]

Successfully created backport PR for 2026.01.xx:

• [Backport 2026.01.xx] Dynamic filter widget: Registered interactions clean up after any target node gets deleted #12017 #12087

[ElenaGallo]

Test passed, @rowheat02 please backport