The PROP_RAW_BOOLEAN raw type exists, but was only used as a fallback in
bpy_rna.cc#foreach_getset to help construct an input RawArray for
PROP_BOOLEAN properties without raw access.
Using the PROP_RAW_BOOLEAN raw type for PROP_BOOLEAN properties where
possible will make it so that almost all PROP_BOOLEAN properties are
considered compatible with bool buffers in bpy_rna.cc#foreach_getset,
which should simplify efficient access to bool properties of collection
items with bpy_rna.cc#foreach_getset.
Only about 50 PROP_BOOLEAN properties have raw access because most
either don't use #RNA_def_property_boolean_sdna or use a bitmask, which
disables raw access. Even fewer of these properties belong to a
StructRNA used by a collection property with raw access.
PROP_BOOLEAN properties with raw access, but which use a type larger
than a single byte are rarer still, and will remain using their existing
raw type because they cannot have raw access as bool.
Pull Request: https://projects.blender.org/blender/blender/pulls/116673
2a97516610