fix floating cursor not disappearing after scroll end

[vishna]

closes #2162

Description

• Call markNeedsPaint in the right place 🤞
• Animation now occurs properly - cursor position* is animated and on the drag end the cursor will disappear as expected

(*) Animation is most of the time not correctly snapped to the right place. The floating cursor seems to be off and even not visible if you scroll the text content down first and then initiate floating cursor 🤷

(**) On second try misaligned snapping doesn't happen so maybe it's all fixed 🤷

Type of Change

• [ ] ✨ New feature: Adds new functionality without breaking existing features.
• [x] 🛠️ Bug fix: Resolves an issue without altering current behavior.
• [ ] 🧹 Code refactor: Code restructuring that does not affect behavior.
• [ ] ❌ Breaking change: Alters existing functionality and requires updates.
• [ ] 🧪 Tests: Adds new tests or modifies existing tests.
• [ ] 📝 Documentation: Updates or additions to documentation.
• [ ] 🗑️ Chore: Routine tasks, or maintenance.
• [ ] ✅ Build configuration change: Changes to build or deploy processes.

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