BGE: Fix for [#35204] "New Alpha-Enabled Shadows Work Until UVs Change" reported by Josiah Lane (solarlune).

BL_BlenderShader was only sending over proper UV data if the current drawing mode was KX_TEXTURED. Now it also checks for (and sends data for) alpha shadows.


git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@56643 954f8c5b-7b00-dc11-b283-0030488c597c