Blender Git Loki

Fix T91743: Unify behavior of 'Auto Set Preview Range'

This is available in the DopeSheet, GraphEditor, and NLA Editor.

Currently:
- Dopesheet advertises to take selection into account...
-- ...but doesnt - which might be a mistake in rBe3842d1ca4dd
- Graph Editor does not mention selection...
-- ...and also does not take it into account
- NLA does not mention selection...
-- ...but takes it into account

Now:
- make them **all** take selection into account (you can still do a
quick 'Select All' prior to get the full range -- better than not being
able to set this based on selection)
- mention this for all in the tooltip
- also reword to 'Set Preview Range to Selected' since using the term
'Auto' impilies this would change on selection change.

Maniphest Tasks: T91743

Differential Revision: https://developer.blender.org/D12651