hpctoolkit: restrict one patch to :2022 (#44268)

Restrict the hpcrun-fmt.txt patch to :2022.  It's fixed in the code
after that, and in recent develop, some code paths have moved causing
this patch to fail.

var/spack/repos/builtin/packages/hpctoolkit/package.py

@@ -234,6 +234,7 @@ class Hpctoolkit(AutotoolsPackage, MesonPackage):
 
     # Fix a bug where make would mistakenly overwrite hpcrun-fmt.h.
     # https://gitlab.com/hpctoolkit/hpctoolkit/-/merge_requests/751
+    @when("@:2022")
     def patch(self):
         with working_dir(join_path("src", "lib", "prof-lean")):
             if os.access("hpcrun-fmt.txt", os.F_OK):