testsuite: bump T22744 timeout to 5x

(cherry picked from commit c739383b)

testsuite/tests/perf/compiler/all.T

@@ -703,7 +703,7 @@ test('T22744',
        req_interp,
        pre_cmd('$MAKE -s --no-print-directory T22744'),
        extra_files(['genT22744']),
-       compile_timeout_multiplier(2)
+       compile_timeout_multiplier(5)
      ],
      multimod_compile,
      ['T22744', '-v0'])