Work around ReactiveCircus/android-emulator-runner#373

.github/workflows/instrumentation.yml

@@ -277,7 +277,20 @@ jobs:
       - name: "Prepare script to run."
         id: script
         env:
-          SCRIPT: ${{ inputs.script }}
+          SCRIPT: |
+            # Workaround for https://github.com/ReactiveCircus/android-emulator-runner/issues/373
+            pre_terminate_crashpad() {
+              # For some reason pgrep/pkill sees only crashpad_handle, not crashpad_handler,
+              # but it's definitely called ${ANDROID_HOME}/emulator/crashpad_handler.
+              
+              # Best-effort gracefully terminate all crashpad_handler processes.
+              pkill --exact --echo --signal SIGTERM crashpad_handle || return
+              sleep 10
+              pkill --exact --echo --signal SIGKILL crashpad_handle || return
+            }
+            trap pre_terminate_crashpad EXIT
+            
+            ${{ inputs.script }}
         run: |
           script_file="${RUNNER_TEMP}/reactivecircus-android-emulator-runner-prepared-script.sh"
           echo "${SCRIPT}" > "${script_file}"