php84Extensions.ctype: remove flaky test for `aarch64-darwin` (#398521)

pkgs/top-level/php-packages.nix

···
                 configureFlags = [ "--with-bz2=${bzip2.dev}" ];
               }
               { name = "calendar"; }
-              { name = "ctype"; }
+              {
+                name = "ctype";
+                postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
+                  # Broken test on aarch64-darwin
+                  rm ext/ctype/tests/lc_ctype_inheritance.phpt
+                '';
+              }
               {
                 name = "curl";
                 buildInputs = [ curl ];