bazel_6: fix CLang 16 Werror-s on darwin

bazel_6 https://hydra.nixos.org/build/241090720/nixlog/1
```
external/upb/upb/upb.c:228:25: error: defining a type within '__builtin_offsetof' is a Clang extension [-Werror,-Wgnu-offsetof-extensions]
  n = UPB_ALIGN_DOWN(n, UPB_ALIGN_OF(upb_Arena));
                        ^~~~~~~~~~~~~~~~~~~~~~~
```
bazel_6 https://hydra.nixos.org/build/241127779/nixlog/1
```
In file included from external/com_google_absl/absl/algorithm/container.h:55:
external/com_google_absl/absl/meta/type_traits.h:560:8: error: builtin __has_trivial_assign is deprecated; use __is_trivially_assignable instead [-Werror,-Wdeprecated-builtins]
      (__has_trivial_assign(ExtentsRemoved) || !kIsCopyOrMoveAssignable) &&
       ^
```

Note: `bazel_5` and `bazel_4` require more work, for some reason extra
`-Wall` in combination with `-Werror` sneaks in and overrides `-Wno-`
settings, haven't managed yet to debug where exactly are the last
flags (last one wins) come from there.

ZHF: #265948

0 files changed, 0 insertions, 0 deletions