sparse: adjust the temporary includes within a `parentchange` context

This is related to dirstate adjustment.

Differential Revision: https://phab.mercurial-scm.org/D11033

mercurial/merge.py

@@ -2149,10 +2149,10 b' def _update('
                 if not branchmerge:
                     repo.dirstate.setbranch(p2.branch())
 
-    # If we're updating to a location, clean up any stale temporary includes
-    # (ex: this happens during hg rebase --abort).
-    if not branchmerge:
-        sparse.prunetemporaryincludes(repo)
+                # If we're updating to a location, clean up any stale temporary includes
+                # (ex: this happens during hg rebase --abort).
+                if not branchmerge:
+                    sparse.prunetemporaryincludes(repo)
 
     if updatedirstate:
         repo.hook(