Add bool toggle for camera controller in PanOrbitCamera component

Sub-issue of #19741

[`PanOrbitCamera`](https://github.com/bevyengine/bevy/blob/main/crates/bevy_camera_controller/src/pan_orbit_camera/controller/component.rs) already have `enabled_motion` field, that can be used to disable some parts of camera control, but lacks simple global `bool` toggle like other camera controllers (e.g. [`PanCamera`](https://github.com/bevyengine/bevy/blob/8255d20b51f0f6cd88f770024b5107e27d74ddec/crates/bevy_camera_controller/src/pan_camera.rs#L53) ).

Add such field to `PanOrbitCamera` and update systems to use it.

## Additional context

Further discussions are welcome in [#editor-dev](https://discord.com/channels/691052431525675048/789987800014651412)

Start with crates/bevy_camera_controller/src/pan_orbit_camera/controller/component.rs and inspect the existing PanOrbitCamera enabled_motion field. Compare it with the enabled toggle on PanCamera, then trace the PanOrbitCamera systems that consume the component. Done means PanOrbitCamera exposes a global bool toggle and those systems respect it.

Written by the indexing model from the issue text.