exp apply: use force dvc-checkout by default

dvc/repo/experiments/apply.py

@@ -50,6 +50,7 @@ def apply(repo: "Repo", rev: str, **kwargs):  # noqa: C901
         raise InvalidExpRevError(rev) from exc
 
     _apply(repo, exp_rev, name=rev, is_stash=is_stash)
+    kwargs["force"] = True
     dvc_checkout(repo, **kwargs)
 
     repo.scm.set_ref(EXEC_APPLY, exp_rev)