libstdc++: Fix up 117406.cc test [PR117406]

libstdc++: Fix up 117406.cc test [PR117406]

Christophe mentioned in bugzilla that the test FAILs on aarch64,
I'm not including <climits> and use INT_MAX.
Apparently during my testing I got it because the test preinclude
-include bits/stdc++.h
and that includes <climits>, dunno why that didn't happen on aarch64.
In any case, either I can add #include <climits>, or because the
test already has #include <limits> I've changed uses of INT_MAX
with std::numeric_limits<int>::max(), that should be the same thing.
But if you prefer
 #include <climits>
I can surely add that instead.

2024-11-04  Jakub Jelinek  <jakub@redhat.com>

	PR libstdc++/117406
	* testsuite/26_numerics/headers/cmath/117406.cc: Use
	std::numeric_limits<int>::max() instead of INT_MAX.