Add adbd to staging allowlist

Bug: 254081374
Test: lunch aosp_arm64 && m --bazel-mode-staging
Test: Manual inspection of `ninja -f out/combined-aosp_arm64.ninja -t commands com.android.adbd | grep "bazel"` after the above command
Change-Id: Ic5a553e1442b22ad2a57456d34cbec6a14e8a950

android/allowlists/allowlists.go

@@ -1359,5 +1359,8 @@ var (
 	// Staging-mode allowlist. Modules in this list are only built
 	// by Bazel with --bazel-mode-staging. This list should contain modules
 	// which will soon be added to the prod allowlist.
-	StagingMixedBuildsEnabledList = []string{"com.android.tzdata"}
+	StagingMixedBuildsEnabledList = []string{
+		"com.android.adbd",
+		"com.android.tzdata",
+	}
 )