Please make this error compile-time: Python bindings were not compiled/linked against expected zstd version (10405 returned by the lib, 10408 hardcoded in zstd headers, 10408 hardcoded in the cext)

I have zstd-1.4.5 installed when the current latest zstd is 1.4.8.

With ```--system-zstd```, it builds and installs, but fails in the runtime:
```
ImportError: zstd C API versions mismatch; Python bindings were not compiled/linked against expected zstd version (10405 returned by the lib, 10408 hardcoded in zstd headers, 10408 hardcoded in the cext)
```

Please move this test to compilation time because this would make it more fail-proof.

Start by tracing the --system-zstd build path and the existing runtime version check described in the issue. Move the mismatch validation into compilation so an incompatible zstd library fails during the build rather than on import; done means the reported version mismatch cannot produce an installable extension.

Written by the indexing model from the issue text.