Blender Git Loki

Fix bone select failing with end-points outside the view

Apply the same fix for T32214 (edge-select failing) to bones
which also failed when their end-points were outside of the view.

- Add V3D_PROJ_TEST_CLIP_CONTENT support for edit & pose bone iterator
and use for selection operators.
- Remove unnecessarily complicated checks with pose-mode lasso tagging.
- Correct error in pose-mode LassoSelectUserData.is_changed
(currently harmless as it's not read back).