Fix issue of clear button in BitDropdown when ItemsProvider is used (#11083)

[msynk]

closes #11083

Summary by CodeRabbit

• Bug Fixes
  • Fixed an issue where clearing a single-select dropdown did not fully reset the selected items, ensuring the selection is properly cleared.

[coderabbitai]

Walkthrough

The update modifies the dropdown component logic to ensure that when the clear button is clicked in single-select mode, the internal list of selected items is also cleared, not just the current value. This change addresses an inconsistency where the UI did not fully reset the selection state.

Changes

File(s)	Change Summary
src/BlazorUI/Bit.BlazorUI/Components/Inputs/Dropdown/BitDropdown.razor.cs	Added logic to clear _selectedItems in single-select mode when the clear button is clicked.

Sequence Diagram(s)

sequenceDiagram
    participant User
    participant BitDropdown
    User->>BitDropdown: Click Clear Button
    alt Single-select mode
        BitDropdown->>BitDropdown: _selectedItems.Clear()
        BitDropdown->>BitDropdown: Reset CurrentValue to default
    end
    BitDropdown->>BitDropdown: UpdateSelectedItemsFromValues()

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Assessment against linked issues

Objective	Addressed	Explanation
Ensure the Clear Button on Dropdown clears the selected item (#11083)	✅

Poem

A dropdown once held tight its choice,
But now it listens to your voice—
One click, selections disappear,
The list is empty, crystal clear!
With every fix, we leap ahead,
A happy rabbit, dropdown fed! 🐇✨

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📥 Commits

Reviewing files that changed from the base of the PR and between 49a3535 and bc0de8a.

📒 Files selected for processing (1)

• src/BlazorUI/Bit.BlazorUI/Components/Inputs/Dropdown/BitDropdown.razor.cs (1 hunks)

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• GitHub Check: build and test

🔇 Additional comments (1)

src/BlazorUI/Bit.BlazorUI/Components/Inputs/Dropdown/BitDropdown.razor.cs (1)

1146-1147: LGTM! Bug fix correctly addresses state inconsistency.

The addition of _selectedItems.Clear() ensures that both the current value and internal selected items list are properly cleared in single-select mode, resolving the inconsistency where the UI could show no selection while the internal state still contained selected items.

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