feat(MultiSelect): expand/collapse dropdown on focus in-out

[eramosr16]

Is there an existing issue for this?

• I have searched the existing issues

Describe the bug

Cycling over select components with Tab don't show the selection options by default.

Expected Behavior

When component get focus should display the option values.

Steps To Reproduce

No response

Exceptions (if any)

No response

.NET Version

No response

Anything else?

No response

[bb-auto[bot]]

@eramosr16 Thank you for filing this issue. In order for us to investigate this issue, please provide a minimalistic repro project that illustrates the problem.

[ArgoZhang]

@eramosr16 The drop-down box cannot be expanded by clicking. When the tab key is pressed. please sync the latest version before pushing pr make sure your commit is up to date

[eramosr16]

@ArgoZhang the dropdown display the options values when you click on it, but when the component get the focus by cycling through the form using Tab key this doesn't happen, the pr created should address this scenario.

[ArgoZhang]

@eramosr16 please fix the bug.

repro steps

1. press Tab to trigger focusin
2. click dropdown item then collapse the dropdown-menu

expected

select value is SelectedItem

actual

the first dropdown-item