[stable31] fix(files_sharing): sidebar link share password checkbox

[elzody]

• Resolves: [Bug]: Share links: password check box is always checked in "Customize link" UI #55660

Summary

Manual backport of #56278

Checklist

• Code is properly formatted
• Sign-off message is added to all commits
• Tests (unit, integration, api and/or acceptance) are included
• Screenshots before/after for front-end changes
• Documentation (manuals or wiki) has been updated or is not required
• Backports requested where applicable (ex: critical bugfixes)
• Labels added where applicable (ex: bug/enhancement, 3. to review, feature component)
• Milestone added for target branch/version (ex: 32.x for stable32)

[elzody]

/compile

[skjnldsv]

Thanks @elzody 🙇