feat(FR-37): Add safety keyboard shortcut to close modal

[yomybaby]

Resolve #2899

Changes:

• Enhanced BAIModal keyboard handling to properly handle Escape key events
• Added focus management to FolderCreateModal, automatically focusing the first input field when opened
• Implemented controlled state management for modal open/close behavior
• Added blur handling for form inputs before modal close when Escape is pressed

Rationale:
This improves the user experience by providing better keyboard navigation and accessibility. When users press Escape while focused on form inputs, it will first blur the input. A second Escape press will close the modal. The first input field is now automatically focused when the modal opens, reducing the need for manual mouse interaction.

Testing Requirements:

1. Verify Escape key behavior:
   • First press should blur focused inputs
   • Second press should close modal
2. Confirm first input field receives focus when modal opens
3. Test keyboard navigation through form fields

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[yomybaby]

• feat(FR-37): Add safety keyboard shortcut to close modal #2907 👈 (View in Graphite)
• main

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