Enh sensitivity UI change #1455

Job	Run time
PyQt5 / ubuntu	2m 51s
PyQt6 / ubuntu	7m 49s
pytest matrix / ubuntu / MNE main	8m 46s
PySide2 / ubuntu	2m 41s
pytest matrix / ubuntu / MNE maint/1.7	8m 8s
PySide6 / ubuntu	7m 59s
pytest matrix / windows / MNE main	9m 26s
PySide6 / macos	7m 12s
pytest matrix / windows / MNE maint/1.7	10m 25s
PySide6 / windows	10m 24s
pytest matrix / macos / MNE main	5m 10s
pytest matrix / macos / MNE maint/1.7	4m 45s
pytest no opengl / ubuntu / MNE main	6m 42s
pytest no opengl / ubuntu / MNE maint/1.7	6m 50s
pytest old / ubuntu / MNE maint/1.5	7m 52s
pytest pip-pre / ubuntu / MNE main	8m 17s
	1h 55m 17s

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