feat: Ask for restarting submission if form was changed

[Koc]

This is a follow-up for #2312 based on a comment #2312 (comment)

nextcloud-reset-demo-2024-09-23_01.49.44.mp4

🎁 Bonus

Added reset button

[Chartman123]

Hi @Koc

nice work. A few wordings changed :) Not tested yet, will do this this evening :)

[Koc]

🗒️ Changes:

• fixed code review comments
• added reset button
• added 🎥 video with demo

cc @Chartman123

[Chartman123]

Two little comments, will test it later :)

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