`Ctrl/Cmd+A` selects entire document when input field is focused

[uint42]

Pressing Ctrl/Cmd+A within any input field of a widget unexpectedly selects the entire document rather than the content of the focused input.

Steps to reproduce:

1. Insert the Timeline widget (or any other widget that contains an input field)
2. Click on + and select the "Enter the title" field
3. Press Ctrl/Cmd+A

Expected behavior:
When an input field is focused, pressing Ctrl/Cmd+A should select only the text within that field. The global “select all” action should only trigger when no input field or editable element is focused.