Include <climits> for GCC 16

Include <climits> for GCC 16

Origin: https://gitlab.freedesktop.org/poppler/poppler/-/commit/4a2294f59ebbbe690d09aa6f7e021e29cbb85782

```
poppler-26.01.0/poppler/SplashOutputDev.cc: In constructor
‘T3FontCache::T3FontCache(const Ref*, double, double, double, double, int, int,
int, int, bool, bool)’:
poppler-26.01.0/poppler/SplashOutputDev.cc:1129:18: error: ‘INT_MAX’ was not
declared in this scope
1129 |     if (glyphW > INT_MAX / glyphH || glyphW <= 0 || glyphH <= 0 ||
glyphW * glyphH > 100000) {
      |                  ^~~~~~~
poppler-26.01.0/poppler/SplashOutputDev.cc:84:1: note: ‘INT_MAX’ is defined in
header ‘<climits>’; this is probably fixable by adding ‘#include <climits>’
   83 | #include "SplashOutputDev.h"
  +++ |+#include <climits>
   84 | #include <algorithm>
```

Signed-off-by: Paul Zander <negril.nx+gentoo@gmail.com>
Signed-off-by: Sam James <sam@gentoo.org>
Gbp-Pq: Name Include-climits-for-GCC-16.patch