fix(select): reset FormControl after clear (#DS-5182)

[NikGurev]

При исследовании inline-edit обнаружено, что после очистки kbq-select через kbq-cleaner значение FormControl не обновлялось.

clearValue вызывал selectionModel.clear(false), что пропускало _emitChangeEvent — единственное место, где CDK сбрасывает кеш _selected.
В итоге, propagateChanges читал устаревший кеш через this.selected → selectionModel.selected и записывал старые значения обратно в FormControl.

Исправление: clear(false) → clear().

Добавлены тесты, проверяющие control.value после клика по cleaner.

До	После
https://github.com/user-attachments/assets/049937d6-fa2d-4f4c-bcc7-b01721be1ca4	https://github.com/user-attachments/assets/61d8d601-67a0-482a-a558-2e34572c05c8

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[Copilot]

Pull request overview

Fixes an issue in KbqSelect where clearing the value via kbq-cleaner didn’t correctly reset the bound FormControl, due to SelectionModel not emitting change events (leaving stale internal selection cache).

Changes:

• Updated clearValue to call selectionModel.clear() (emit changes) instead of clear(false) so the internal selected cache is properly reset.
• Added unit tests to assert FormControl.value updates after clicking the cleaner for both single- and multi-select.
• Added a visual-selection regression test for multi-select to ensure options are deselected in the panel after clear.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
packages/components/select/select.component.ts	Ensures clear action emits selection-model change events so clearing actually propagates to forms.
packages/components/select/select.component.spec.ts	Adds regression coverage for FormControl updates and visual deselection after using the cleaner.

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