Outliner: Fix selection sync for various operators

Add missing outliner selection sync tagging for various non-outliner
operators.
* Curve separate
* Grease Pencil separate
* Mesh separate
* Make instances real
* 3D view paste
* Sequencer paste
* Armature delete, dissolve, separate, duplicate, subdivide, extrude,
  click extrude, primitive add
* Pose Group select, delete

Resolves T71404

source/blender/editors/curve/editcurve.c

@@ -58,6 +58,7 @@
 
 #include "ED_curve.h"
 #include "ED_object.h"
+#include "ED_outliner.h"
 #include "ED_screen.h"
 #include "ED_transform.h"
 #include "ED_transform_snap_object_context.h"
@@ -1500,6 +1501,8 @@ static int separate_exec(bContext *C, wmOperator *op)
     return OPERATOR_CANCELLED;
   }
 
+  ED_outliner_select_sync_from_object_tag(C);
+
   return OPERATOR_FINISHED;
 }