This fixes the #15896. For problem statement. Please refer to the shared
video mentioned in the issue.
<!-- CURSOR_SUMMARY -->
---
> [!NOTE]
> Aligns filter defaults across UI by centralizing initial value
computation.
>
> - Add boolean handling in `useGetInitialFilterValue` to return
`value/displayValue` of `'false'` when operand is `IS`
> - Update `WorkflowDropdownStepOutputItems` to use
`getInitialFilterValue` for initial `value` instead of an empty string,
based on field type and default operand
>
> <sup>Written by [Cursor
Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit
3ce05fa31a. This will update automatically
on new commits. Configure
[here](https://cursor.com/dashboard?tab=bugbot).</sup>
<!-- /CURSOR_SUMMARY -->
---------
Co-authored-by: Félix Malfait <felix.malfait@gmail.com>
Co-authored-by: Félix Malfait <felix@twenty.com>