Handle root_symlinks and symlinks in OSS-Fuzz packaging

Bazel 9 provides the bash runfiles library via root_symlinks
instead of regular runfiles. The OSS-Fuzz packaging rule only
iterated over runfiles.files, missing root_symlinks entries
entirely and causing "cannot find runfiles.bash" errors at
runtime.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: fmeum

fuzzing/private/oss_fuzz/package.bzl

@@ -39,6 +39,21 @@ def _oss_fuzz_package_impl(ctx):
         for runfile in binary_runfiles
         if runfile != binary_info.binary_file and not runfile_path(ctx, runfile).startswith(local_jdk_prefix)
     ])
+
+    for symlink in binary_info.binary_runfiles.root_symlinks.to_list():
+        archive_inputs.append(symlink.target_file)
+        runfiles_manifest_content += "{path} {real_path}\n".format(
+            path = symlink.path,
+            real_path = symlink.target_file.path,
+        )
+
+    for symlink in binary_info.binary_runfiles.symlinks.to_list():
+        archive_inputs.append(symlink.target_file)
+        runfiles_manifest_content += "{path} {real_path}\n".format(
+            path = ctx.workspace_name + "/" + symlink.path,
+            real_path = symlink.target_file.path,
+        )
+
     ctx.actions.write(runfiles_manifest, runfiles_manifest_content, False)
     archive_inputs.append(runfiles_manifest)