fix: correct event types for handleSelectAll and handleClearAll

[Copilot]

Proposed changes

Addresses feedback from PR #5470 regarding incorrect event types in custom-select component handlers.

Changes:

• Added ChangeEvent to imports from ../../shared/model
• Changed handleSelectAll parameter type from InputEvent<HTMLInputElement> to ChangeEvent<HTMLInputElement> (called from onChange event handler on checkbox)
• Changed handleClearAll parameter type from InputEvent<HTMLInputElement> to ClickEvent<HTMLButtonElement> (called from onClick event handler on DBButton)

Each handler now uses the appropriate event type matching how it's invoked:

• handleSelectAll is called from an onChange event (line 1061-1064 in custom-select.lite.tsx), so ChangeEvent is correct
• handleClearAll is called from an onClick event (line 1179 in custom-select.lite.tsx), so ClickEvent is correct

Types of changes

• Bugfix (non-breaking change that fixes an issue)
• New feature (non-breaking change which adds functionality)
• Refactoring (improvements to existing components or architectural decisions)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation Update (if none of the other choices apply)

Further comments

This is a stacked PR addressing specific review feedback from #5470. The type corrections ensure proper TypeScript type safety for event handlers by matching each parameter type to its actual usage in the component.

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Latest commit: 823197c

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[mfranzke]

@copilot handleClearAll method is actually triggered by an onClick event, which isn't a ChangeEvent than, is it ?

[Copilot]

@copilot [handleClearAll method is actually triggered by an onClick event](https://github.com/db-ux-design-system/core-web/blob/main/packages/components/src/components/custom-select/custom-select....

You're absolutely correct! Fixed in commit 823197c. Changed handleClearAll from ChangeEvent<HTMLInputElement> to ClickEvent<HTMLButtonElement> since it's triggered by an onClick event on a DBButton, not an onChange event.