Do not allow clearing Android logs if the emulator is not running (#21578)

### Description
Do not allow clearing Android logs if the emulator is not running



### Motivation and Context
Previously the Clearing Android logs step stuck until the pipeline
timeout. If one of the previous steps failed.

tools/ci_build/github/azure-pipelines/templates/android-dump-logs-from-steps.yml

@@ -5,12 +5,23 @@ parameters:
   type: stepList
 
 steps:
+- task: CmdLine@2
+  input:
+    script: |
+      if [ -f $(Build.BinariesDirectory)/emulator.pid ]; then
+        echo "Emulator is running."
+        echo "##vso[task.setvariable variable=isEmulatorRunning]True"
+      else
+        echo "Emulator is not running."
+      fi
+  name: Determine if emulator is running
+
 - task: CmdLine@2
   inputs:
     script: |
       python3 tools/python/run_adb.py logcat --clear
   displayName: "Clear Android logs"
-  condition: succeededOrFailed()
+  condition: eq(variables['isEmulatorRunning'], 'True')
 
 - ${{ parameters.steps }}
 
@@ -19,4 +30,4 @@ steps:
     script: |
       python3 tools/python/run_adb.py logcat -d
   displayName: "Dump Android logs"
-  condition: succeededOrFailed()
+  condition: eq(variables['isEmulatorRunning'], 'True')