Blender Git Loki

CMake/macOS: Avoid passing compiler flags to try_compile.

`APPLE` platform handles ASan compiler and linker flags using
`add_compile_options` and `add_link_options`. {rB74bcb32c9f02}

Arguments in `CMAKE_{LANG}_FLAGS{_CONFIG}` are also passed to
`try_compile` which will fail due to linker errors, since link flags
are not set. `try_compile` is used by `find_package(Boost)` for
`thread` library.

See CMP0066 [1] also.

[1] https://cmake.org/cmake/help/latest/policy/CMP0066.html

Ref D8855