fix(fuselage): prevent MultiSelect dropdown from reopening on toggle click

[DammyCodes-all]

Proposed changes (including videos or screenshots)

Fixed an issue in MultiSelect where clicking the chevron or select body while the dropdown was open could cause it to close and immediately reopen.
This update makes toggle behavior deterministic by using the pre-blur interaction state, so clicking the control now properly closes the menu and prevents the weird reopening error.

What changed

• Captured dropdown visibility on mousedown before blur fires.
• Updated click toggle logic to use captured visibility state.
• Kept outside-click close behavior unchanged.
• Preserved normal open-on-click behavior when the dropdown is closed.

Validation

• Verified component behavior manually in Storybook.
• Ran focused tests for MultiSelect successfully.

Issue(s)

Closes #1869

Further comments

The root cause was event ordering (mousedown → blur → click): blur was hiding first, then click handler saw a closed state and reopened.
The implemented fix resolves that race without changing the public API or expected keyboard/outside-click behavior.

videos

Before
https://github.com/user-attachments/assets/af12670c-81c9-4911-9a48-06e09db4bd20

After
https://github.com/user-attachments/assets/282abc72-9546-42b1-907a-314a37bfc161

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