bpy.ops.object.select_all requires a VIEW_3D context to pass
its poll() check. The two calls were outside the existing
temp_override blocks, causing a RuntimeError when the operator
was invoked from a non-3D-view area (e.g. a properties panel).
Moved both calls inside the adjacent temp_override blocks.
Generated with the assistance of an AI coding tool.
Ryan Schultz
d72c400756