Improvement: UI performance of Habit List drag&drop

[Vladuken]

Optimised performance of Habits List little bit.
List of improvements:

• Remove unneeded calls to notifyDataSetChanged() when clearselection() is called
• removed init of Paint() in View.drawNotesIndicator() (it was in onDraw)
• remove some button reinflation when data in view changes

I've tried AA of these changes - and hopefully not broken anything - but you can recheck additionally, thanks!

Before

Screen_recording_20250915_232414.mp4

After

Screen_recording_20250915_232526.mp4