[clang] [flang][driver] Don't use -whole-archive on Darwin (PR #75393)

[via cfe-commits]

kkwli wrote:

I build and `check-flang` on `arm64-apple-darwin22.6.0`. `Driver/no-duplicate-main.f90` fails in the 3rd RUN. The test passes with HEAD.

```
kelvin at neutrino2 build % /Users/kelvin/wrk/llvm/tmp/build/bin/flang-new -o /Users/kelvin/wrk/llvm/tmp/build/tools/flang/test/Driver/Output/no-duplicate-main.f90.tmp.exe /Users/kelvin/wrk/llvm/tmp/build/tools/flang/test/Driver/Output/no-duplicate-main.f90.tmp /Users/kelvin/wrk/llvm/tmp/build/tools/flang/test/Driver/Output/no-duplicate-main.f90.tmp.c-object

kelvin at neutrino2 build % echo $?
0
```

https://github.com/llvm/llvm-project/pull/75393