Move simple Edit Button from top to right bottom corner to prevent cover

[chrissooo]

Like in #3241 reported, the plain edit mode Button covers the note text when the rich mod edit is deactivated. In this PR i moved the Big Button in the right bottom corner an follow the stype and position of the rich mode button. I leave the PR small and hope it will be accepted.

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• ⛑️ 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 ✅

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[chrissooo]

There is also a bigger PR that fix also the same problem and more: #3248

[tobiasKaminsky]

Thank you!
Can you check DCO?

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