Don't buffer build output

Use a Bazel flag to prevent BEP output from being heavily buffered.

PiperOrigin-RevId: 187387687

src/TulsiGenerator/Scripts/bazel_build.py

diff --git a/src/TulsiGenerator/Scripts/bazel_build.py b/src/TulsiGenerator/Scripts/bazel_build.py
index b4f0ca3..559df0b 100755
--- a/src/TulsiGenerator/Scripts/bazel_build.py
+++ b/src/TulsiGenerator/Scripts/bazel_build.py
@@ -800,7 +800,7 @@
     bazel_command.extend([
         '--build_event_json_file=%s' % self.build_events_file_path,
         '--noexperimental_build_event_json_file_path_conversion',
-        #  '--bes_outerr_buffer_size=0',  #  Waiting on a new external release.
+        '--bes_outerr_buffer_size=0',  # Don't buffer Bazel output at all.
         '--output_groups=tulsi-outputs,default',
         '--aspects', '@tulsi//tulsi:tulsi_aspects.bzl%tulsi_outputs_aspect',
         '--override_repository=tulsi=%s' % tulsi_package_dir,