UI: add back Data-block 'show_hidden_files_datablocks' name

This name didn't indicate items in the ID data-block browser will be hidden too.

Reverts part of:
ad707115d5

source/blender/makesrna/intern/rna_userdef.c

@@ -5437,7 +5437,7 @@ static void rna_def_userdef_filepaths(BlenderRNA *brna)
   prop = RNA_def_property(srna, "show_hidden_files_datablocks", PROP_BOOLEAN, PROP_NONE);
   RNA_def_property_boolean_sdna(prop, NULL, "uiflag", USER_HIDE_DOT);
   RNA_def_property_ui_text(prop,
-                           "Hide Dot Files/Libraries",
+                           "Hide Dot Files/Data-blocks",
                            "Hide files and data-blocks if their name start with a dot (.*)");
 
   prop = RNA_def_property(srna, "use_filter_files", PROP_BOOLEAN, PROP_NONE);