Fix #35354: dyntopo - materials and UI display issues

Textured dyntopo draw was leaving 2d textures enabled when it shouldn't.

Root of the issue was figured out by Campbell, actual place where
2D textures left enabled found by self.

Also, simplified fix is suggested by Campbell (mine was 2 lines longer! :)

source/blender/blenkernel/intern/cdderivedmesh.c

@@ -658,9 +658,8 @@ static void cdDM_drawFacesTex_common(DerivedMesh *dm,
 	 */
 	if (cddm->pbvh && cddm->pbvh_draw && BKE_pbvh_type(cddm->pbvh) == PBVH_BMESH) {
 		if (dm->numTessFaceData) {
-			glDisable(GL_TEXTURE_2D);
+			GPU_set_tpage(NULL, false, false);
 			BKE_pbvh_draw(cddm->pbvh, NULL, NULL, NULL, FALSE);
-			glEnable(GL_TEXTURE_2D);
 		}
 
 		return;