10837 Review changed files in Altinn Studio

[standeren]

Description

• Remove hardcoded 1 in notification for shareChanges button
• Remove conditional Mergeconflict text in buttons for shareing and fetching changes
• Add button to review changes in shareChangesPopup if there are local changes
• Implement a modal to review fileNames and connected fileStatus

https://github.com/Altinn/altinn-studio/assets/71079896/a8406e2e-a946-414d-8729-662a2321fbbd

• Also added some padding to the LocalChangesModal

Out of scope in this PR: implement support to review actual diff for each file. Should be done in a different PR

Related Issue(s)

• #{issue number}

Verification

• [x] Your code builds clean without any errors or warnings
• [x] Manual testing done (required)
• [x] Relevant automated test added (if you find this hard, leave it and we'll help out)