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