infra: bazel_build_fuzz_tests: avoid change of OUT ownership

[DavidKorczynski]

The current bazel builds change the owner of the $OUT directory due to tar. This can cause some issues depending on how Docker is run, but, this is ultimately annoying since e.g. OSS-Fuzz-gen and end-to-end OSS-Fuzz runs relies on reading the files in the OUT directory, which is not possible when the owner changes. Furthermore, it's inconsistent with the existing compile_* scripts to change the owner of $OUT/

This fixes it by not changing the owner.