New function, split off from gtk_tree_view_column_clear_attributes.

New function, split off from gtk_tree_view_column_clear_attributes.

	* gtk/gtktreeviewcolumn.c
	(gtk_tree_view_column_clear_attributes_by_info): New function,
	split off from gtk_tree_view_column_clear_attributes.
	(gtk_tree_view_column_clear_attributes):
	(gtk_tree_view_column_finalize):  Call the new function, avoid
	recalculating the info from the renderer.  (#84413)

	* gtk/gtktextview.c (text_view_child_new_anchored): Initialize
	vc->type in order to avoid a later UMR.  (#84415)