Blender Git Loki

Fix: Incorrect declaration of XrActionMaps RNA

This fixes a mistake in the XrActionMaps RNA struct declaration.

Originally, the XrActionMaps struct SDNA was set as wmXrData to get
access to wmXrRuntimeData. However, this doesn't give a valid pointer
and the XrSessionState RNA pointer needs to be passed instead.

Since XrSessionState itself does not have SDNA, it is necessary to
pass the XrSessionState pointer to the XrActionMaps struct functions
(new(), new_from_actionmap(), ...) instead of simply using
RNA_def_struct_sdna().