testsuite: Mark T14761c as broken in hpc, profasm, and optasm ways

As noted in #16540.

testsuite/tests/typecheck/should_compile/all.T

@@ -659,7 +659,7 @@ test('T15586', normal, compile, [''])
 test('T15368', normal, compile, ['-fdefer-type-errors'])
 test('T15645', normal, compile, ['-Wwarn=missing-monadfail-instances'])
 test('T15778', normal, compile, [''])
-test('T14761c', normal, compile, [''])
+test('T14761c', expect_broken_for(16540, ['hpc', 'profasm', 'optasm']), compile, [''])
 test('T16008', normal, compile, [''])
 test('T16033', normal, compile, [''])
 test('T16141', normal, compile, ['-O'])