feat(tags): unselect tags on blur (#DS-4199)

[artembelik]

No description provided.

[Copilot]

Pull Request Overview

This PR implements functionality to automatically unselect tags when focus is lost from the tag list component. The feature ensures that tags are deselected both when focus moves to the tag input field and when the component loses focus entirely (blur event).

• Adds focus monitoring to automatically unselect tags on blur
• Implements unselectAll() method for programmatic tag deselection
• Updates tag input to unselect tags when it receives focus

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
tools/public_api_guard/components/tags.api.md	Updates API surface to include new AfterViewInit interface and unselectAll() method
packages/components/tags/tag-list.component.ts	Implements focus monitoring and unselectAll() method with lifecycle changes
packages/components/tags/tag-list.component.spec.ts	Adds comprehensive tests for the new unselect behavior
packages/components/tags/tag-input.ts	Modifies focus handler to unselect tags when input gains focus

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[rmnturov]

Я просил делать развыбор только в контроле, если это важно.