Add missing/incorrect selection flushes.

Added selection flush after loop cut, changed select_linked_pick's
flush to use the em selection flag.

Fixes bug [#31715] Cases where verts and edges are selected but not
relevant faces

source/blender/editors/mesh/editmesh_loopcut.c

@@ -329,6 +329,8 @@ static void ringsel_finish(bContext *C, wmOperator *op)
 
 				WM_event_add_notifier(C, NC_SCENE | ND_TOOLSETTINGS, CTX_data_scene(C));
 			}
+			else
+				EDBM_selectmode_flush(lcd->em);
 
 			WM_event_add_notifier(C, NC_GEOM | ND_SELECT | ND_DATA, lcd->ob->data);
 			DAG_id_tag_update(lcd->ob->data, 0);