Avoid edit button to cover cursor when the text is scrolled due to the user deleting an entire line

[daniele-verducci]

Fix: #2272 (comment)

How to repro:

• Write a long text so that the view will scroll
• Delete a line so it scrolls back due to the shorter text
• The FAB covers the text and makes impossible to see what is being written/deleted

🖼️ Screenshots

🏚️ Before	🏡 After
before.webm	after.webm

🏁 Checklist

• ⛑️ Tests (unit and/or integration) are included or not needed
• 🔙 Backport requests are created or not needed: /backport to stable-xx.x
• 📅 Milestone is set
• 🌸 PR title is meaningful (if it should be in the changelog: is it meaningful to users?)

🤖 AI (if applicable)

• The content of this PR was partly or fully generated using AI

[codacy-production]

Up to standards ✅

🟢 Issues 0 issues

Results:
0 new issues

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🟢 Metrics 0 complexity · 0 duplication

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Duplication	0

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[github-actions]

APK file: https://github.com/nextcloud/notes-android/actions/runs/33493461810/artifacts/9797670470
To test this change/fix you can simply download above APK file and install and test it in parallel to your existing Nextcloud app.
(please click on link to get QR code displayed)

[github-actions]

APK file: https://github.com/nextcloud/notes-android/actions/runs/33732355255/artifacts/9884918645
To test this change/fix you can simply download above APK file and install and test it in parallel to your existing Nextcloud app.
(please click on link to get QR code displayed)

[github-actions]

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