Move bp2build progress proto to soong.

This allows us to reuse existing infra to export to internal.

Test: b build //build/bazel/scripts/bp2build-progress:bp2build-progress
Change-Id: If4888f8f59d56ddf4e98bdb8456ca69ff7f78a49
diff --git a/android/allowlists/allowlists.go b/android/allowlists/allowlists.go
index a5799a5..1f6ecb5 100644
--- a/android/allowlists/allowlists.go
+++ b/android/allowlists/allowlists.go
@@ -262,6 +262,7 @@
 		// build/make/tools/signapk BUILD file is generated, so build/make/tools is not recursive.
 		"build/make/tools":/* recursive = */ false,
 		"build/pesto":/* recursive = */ true,
+		"build/soong/ui/metrics/bp2build_progress_metrics_proto":/* recursive = */ true,
 
 		// external/bazelbuild-rules_android/... is needed by mixed builds, otherwise mixed builds analysis fails
 		// e.g. ERROR: Analysis of target '@soong_injection//mixed_builds:buildroot' failed