Fix T92405: Emission Strength Animation of 2.93.5 inherited wrongly in 3.0

CyclesX introduced two new input sockets for the Principled BSDF node in
rB08031197250a. This change is now handled in the versioning code so that
Animation data targeting those sockets are now updated.

Files created with the last Blender release (2.93) or earlier are now
correctly versioned. Files created with 3.0 alpha/beta may need to be
manually updated.

source/blender/blenloader/intern/versioning_300.c

@@ -779,6 +779,8 @@ void do_versions_after_linking_300(Main *bmain, ReportList *UNUSED(reports))
    */
   {
     /* Keep this block, even when empty. */
+
+    version_node_socket_index_animdata(bmain, NTREE_SHADER, SH_NODE_BSDF_PRINCIPLED, 4, 2, 25);
   }
 }