Correctly update hasSubLinks while mutating a rule action.

rewriteRuleAction neglected to check for SubLink nodes in the
securityQuals of range table entries.  This could lead to failing
to convert such a SubLink to a SubPlan, resulting in assertion
crashes or weird errors later in planning.

In passing, fix some poor coding in rewriteTargetView:
we should not pass the source parsetree's hasSubLinks
field to ReplaceVarsFromTargetList's outer_hasSubLinks.
ReplaceVarsFromTargetList knows enough to ignore that
when a Query node is passed, but it's still confusing
and bad precedent: if we did try to update that flag
we'd be updating a stale copy of the parsetree.

Per bug #17972 from Alexander Lakhin.  This has been broken since
we added RangeTblEntry.securityQuals (although the presented test
case only fails back to 215b43cdc), so back-patch all the way.

Discussion: https://postgr.es/m/17972-f422c094237847d0@postgresql.org

src/backend/rewrite/rewriteHandler.c

@@ -472,6 +472,8 @@ rewriteRuleAction(Query *parsetree,
 					/* other RTE types don't contain bare expressions */
 					break;
 			}
+			sub_action->hasSubLinks |=
+				checkExprHasSubLink((Node *) rte->securityQuals);
 			if (sub_action->hasSubLinks)
 				break;			/* no need to keep scanning rtable */
 		}
@@ -3304,7 +3306,7 @@ rewriteTargetView(Query *parsetree, Relation view)
 								  view_targetlist,
 								  REPLACEVARS_REPORT_ERROR,
 								  0,
-								  &parsetree->hasSubLinks);
+								  NULL);
 
 	/*
 	 * Update all other RTI references in the query that point to the view