fix-trigger-hour-dropdown

[ultrahighsuper]

Related Issue

Closes #1590

Description

Fixes a UI bug in the Edit Trigger schedule panel where the Hour/Minute dropdown closes before selection when the user interacts with the dropdown's right-side scrollbar/slider.

Root cause was the input blur handler always closing the dropdown after a timeout, even during valid dropdown interaction.

Change made in src/components/ui/input-select.tsx:

• Added a dropdown interaction guard (interactingWithDropdownRef) set on onMouseDownCapture for the dropdown panel.
• Prevented blur-close while that interaction flag is active.
• Reset the interaction flag on global mouseup while dropdown is open.

This keeps the dropdown open during scrollbar interaction and still allows normal outside-click close behavior.

Testing Evidence (REQUIRED)

• I have included human-verified testing evidence in this PR.
• This PR includes frontend/UI changes, and I attached screenshot(s) or screen recording(s).
• No frontend/UI changes in this PR.

What is the purpose of this pull request?

• Bug fix
• New Feature
• Documentation update
• Other

Contribution Guidelines Acknowledgement

• I have read and agree to the Eigent Contribution Guideline

2026-04-29_09h07_02.mp4

[ultrahighsuper]

@4pmtong
Please check this PR.