cc deps to java_library to android_binary doesn't work

TL;DR

A dependence chain of cc_library -> java_library -> android_library -> android_binary no longer materializes a .so files in the app's APK.

Root cause

rules_android PR #291 removes --experimental_google_legacy_api from the .bazelrc file of rules_android itself. This flag guards the availability of two features used by rules_android:

• java_common.add_constraints: Adds constraints = ["android"] to all android_library and android_binary rules
• JavaInfo.cc_link_params_info: Returns the list of CcLinkParamsInfo providers from a JavaInfo provider.

The java_common attribute above should be an innocuous change for OSS users: the feature is not pertinent outside of Google-internal app builds. However, the latter attribute (cc_link_params_info)
may have pertinence for open source builds, if the dependence chain described in the "TL;DR" section exists. PR #291 refactors the Android rules to optionally extract JavaInfo.cc_link_params_info
using getattr(). Because that attribute is not available unless --experimental_google_legacy_api is passed to Bazel, the CcLinkParamsInfo providers are no longer visible.

The net effect of this is that if a user's build depends on the android_binary rule to compile and link C++ dependencies, and to store the compiled C++ .so file into their APK, their library will no longer
appear as expected in the app.

Reproducing the failure

With Bazel 8.0.0rc7 or 7.4.1: bazel build //:so_file_from_app. This target attempts to unzip the .so file from the Baz.apk file in //:Baz_app. A failure message should appear:

ERROR: /usr/local/google/home/tedx/work/link_params/BUILD:73:8: declared output 'lib_from_app.so' was not created by genrule.

Reproducing the old successful behavior

First set up a git clone of rules_android checked out to 8021eedc11c9961fabb24a1144dfc40ae2c7a327. Then, with bazel 8.0.0rc7 or 7.4.1: bazel build //:so_file_from_app --override_module=rules_android=/path/to/your/rules_android.

INFO: Found 1 target...
Target //:so_file_from_app up-to-date:
  bazel-bin/lib_from_app.so