Reported for the geometry nodes gizmos, but in general `cage2d`,
`cage3d` and `arrow` were affected (so for example Forcefield arrows, UV
editing transform tool, Lamp angle gizmo, ...)
`gizmo_cage3d_modal`, `gizmo_cage2d_modal` and `gizmo_arrow_modal` add a
`WM_event_add_mousemove` which ... lets the modal run even if the mouse
does **not** move...
This seems to date back to d8f931c9b7 in the arrow gizmo, others
probably just copied from there (not the DialGizmo though), did not do
further git archeology.
Propose to just remove `WM_event_add_mousemove` (even though there
_might_ still be reasons for this -- could not spot any though...)
Pull Request: https://projects.blender.org/blender/blender/pulls/146310
fca5bcbe46