bagpipe palette updates
fix #21246, other fixes for text
fix #22177: Stave text doesn't move in accordance with re-positioned instrument
fix #22195: MIDI Import Panel columns not adjustable or scrollable
Merge pull request #436 from trig-ger/midi_panel

fix #22195: MIDI Import Panel columns not adjustable or scrollable
fix master palette for bagpipe
fix handling of return key in styled text
fix Del key handling in simpletext, avoid crash
fix #22177
updates for style
Swing option for MIDI import
Tests for swing
Make SwingDetector class private
Equal spacing of swung notes
"Shuffle" word for 3:1 swing
Fix tuplet and rest deletion
fix #22175
fix #22204: tuning parameter doesn't accept negative values
fix inspector handling of QComboBox
fix #22199: Playback head during multi-bar rests erratic