Bazel: Disable implicit Python __init__.py creation

Enable rules_python's upcoming default of requiring explicit
__init__.py files. This removes the deprecation warning emitted for
Bazel's ProGuard allowlister during Java toolchain analysis.

Change-Id: I31f2b0982083c9094300aaf5f6c27de38ce4fe37

.bazelrc

diff --git a/.bazelrc b/.bazelrc
index 9eba3a3..2a1c89b 100644
--- a/.bazelrc
+++ b/.bazelrc
@@ -3,6 +3,7 @@
 startup --host_jvm_args=-XX:+UseCompactObjectHeaders
 
 common --lockfile_mode=error
+common --@rules_python//python/config_settings:incompatible_default_to_explicit_init_py=true
 
 build --workspace_status_command="python3 ./tools/workspace_status.py"
 build --repository_cache=~/.gerritcodereview/bazel-cache/repository