chore(tests): skip tests relying on unsupported APIs on NX and PS platforms

[tustanivsky]

Bumping sentry-native to 0.12.7 for Switch and PlayStation introduced the following issues:

• The cache tests added in feat: offline caching (inproc & breakpad) #1490 and feat(crashpad): offline caching #1493 rely on utime() to modify file timestamps. This POSIX function is not available in either the Nintendo Switch or PlayStation SDKs which causes build failures when compiling sentry_test_unit for these platforms (see the linked Switch and PlayStation CI failures).

• A new path_rename test exercises sentry__path_rename which ultimately calls rename() on Unix. The NX filesystem does not support rename() so this test also fails on Switch.

Key changes:

• Guard <utime.h> include and set_file_mtime() implementation with platform checks to avoid linker errors
• Skip all test_cache tests on NX and PlayStation platforms where utime() is unavailable
• Skip path_rename test on NX, following the same pattern already used for other NX-unsupported tests in that file

#skip-changelog

[jpnurmi]

Do we run integration tests on consoles? Will test_integration_cache.py (using os.utime) also create issues?

[tustanivsky]

Will test_integration_cache.py (using os.utime) also create issues?

No - to run integration tests on consoles we have a completely different setup that does not rely on the .py scripts used by sentry-native.