edit_text was missing a call to edit_text_alignment,
so align_vertical/align_horizontal prop changes were
never exported to IFC.

Additionally, edit_text_alignment was called before
edit_text_literals, which deletes and recreates the
IFC literal entities — discarding the alignment change
immediately. Moved the call to after edit_text_literals.

EditText operator was also being replayed by Blender's
undo/register stack with stale prop values, overwriting
the correct alignment. Guarded _execute with is_editing
to make replayed calls no-ops.

Also fixed a ValueError in is_camera_moved where
np_frombuffer_legacy returns a flat (9,) array but the
rotation dot product requires (3,3). Fixed with reshape.

Generated with the assistance of an AI coding tool.

When enabling text editing, align_vertical and
align_horizontal were not populated from the existing
IFC BoxAlignment value, causing them to revert to
their Blender property defaults.

Generated with the assistance of an AI coding tool.