Fix: add label to View Center property

For unknown reasons, this property did not have a label before.

Pull Request: https://projects.blender.org/blender/blender/pulls/147712

source/blender/makesrna/intern/rna_nodetree.cc

@@ -9436,7 +9436,7 @@ static void rna_def_nodetree(BlenderRNA *brna)
   RNA_def_property_array(prop, 2);
   RNA_def_property_float_sdna(prop, nullptr, "view_center");
   RNA_def_property_ui_text(
-      prop, "", "The current location (offset) of the view for this Node Tree");
+      prop, "View Center", "The current location (offset) of the view for this Node Tree");
   RNA_def_property_clear_flag(prop, PROP_EDITABLE);
 
   prop = RNA_def_property(srna, "description", PROP_STRING, PROP_NONE);