fix: split layout of conflict view

[max-nextcloud]

📝 Summary

Give both versions 50% of the screen space and try to vertically align them. This should make comparing the versions easier.

Fixes #3950.

🖼️ Screenshots

🏚️ Before	🏡 After

🏁 Checklist

• Code is properly formatted (npm run lint / npm run stylelint / composer run cs:check)
• Sign-off message is added to all commits
• Tests (unit, integration and/or end-to-end) passing and the changes are covered with tests
• Documentation is not required

[max-nextcloud]

/backport to stable26

[max-nextcloud]

/compile

[cypress]

1 flaky tests on run #9086 ↗︎

0

140

1

0

1

Details:

fix: split layout of conflict view
Project: Text	Commit: 4f215d083f
Status: Passed	Duration: 03:34 💡
Started: Mar 16, 2023 9:23 PM	Ended: Mar 16, 2023 9:26 PM

  cypress/e2e/share.spec.js • 1 flaky test

View Output Video

Test		Artifacts
Open test.md in viewer > Share a file with download disabled shows an error		Output Screenshots

_{This comment has been generated by cypress-bot as a result of this project's GitHub integration settings.}

[mejo-]

/compile

[backportbot-nextcloud]

The backport to stable26 failed. Please do this backport manually.

# Switch to the target branch and update it
git checkout stable26
git pull origin/stable26

# Create the new backport branch
git checkout -b fix/foo-stable26

# Cherry pick the change from the commit sha1 of the change against the default branch
# This might cause conflicts. Resolve them.
git cherry-pick abc123

# Push the cherry pick commit to the remote repository and open a pull request
git push origin fix/foo-stable26

More info at https://docs.nextcloud.com/server/latest/developer_manual/getting_started/development_process.html#manual-backport

[mejo-]

/backport e83f2db,21d48ec36dd49c63aaa7185e443b9d3043cffe60 to stable26