fixup! add test for SELinux flags-based per-app hardening features

This fixes the following error on duplicate permissions across
HardeningTestApp, potentially caused by aapt2 peculiarity:
```
RUNNER ERROR: com.android.tradefed.targetprep.TargetSetupError[APK_INSTALLATION_FAILED|520001|DEPENDENCY_ISSUE]: Failed to install app.grapheneos.hardeningtest.sdk_27 with [${TMP_DIR}/HardeningTestAppSdk27.apk] on $SERIAL_NUMBER. Reason: 'INSTALL_FAILED_DUPLICATE_PERMISSION: Package app.grapheneos.hardeningtest.sdk_27 attempting to redeclare permission app.grapheneos.hardeningtest.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION already owned by app.grapheneos.hardeningtest.preinstalled' [$SERIAL_NUMBER $TARGET_PRODUCT:$TARGET_PRODUCT $BUILD_NUMBER]
        at com.android.tradefed.targetprep.TestAppInstallSetup.installSinglePackage(TestAppInstallSetup.java:595)
        at com.android.tradefed.targetprep.TestAppInstallSetup.installer(TestAppInstallSetup.java:562)
        at com.android.tradefed.targetprep.TestAppInstallSetup.setUp(TestAppInstallSetup.java:429)
        at com.android.tradefed.testtype.suite.ModuleDefinition.runPreparerSetup(ModuleDefinition.java:1048)
        at com.android.tradefed.testtype.suite.ModuleDefinition.runTargetPreparation(ModuleDefinition.java:1517)
        at com.android.tradefed.testtype.suite.ModuleDefinition.runPreparation(ModuleDefinition.java:1007)
        at com.android.tradefed.testtype.suite.ModuleDefinition.run(ModuleDefinition.java:515)
        at com.android.tradefed.testtype.suite.ITestSuite.runSingleModule(ITestSuite.java:1277)
        at com.android.tradefed.testtype.suite.ITestSuite.run(ITestSuite.java:1044)
        at com.android.tradefed.invoker.InvocationExecution.runTest(InvocationExecution.java:1457)
        at com.android.tradefed.invoker.InvocationExecution.runTests(InvocationExecution.java:1232)
        at com.android.tradefed.invoker.TestInvocation.prepareAndRun(TestInvocation.java:636)
        at com.android.tradefed.invoker.TestInvocation.performInvocation(TestInvocation.java:291)
        at com.android.tradefed.invoker.TestInvocation.invoke(TestInvocation.java:1429)
        at com.android.tradefed.command.CommandScheduler$InvocationThread.run(CommandScheduler.java:692)
```

Author: quh4gko8

tests/HardeningTest/HardeningTestApp/AndroidManifest.xml

@@ -3,6 +3,12 @@
     xmlns:tools="http://schemas.android.com/tools"
     package="app.grapheneos.hardeningtest">
 
+    <!--   Since there are multiple versions of HardeningTest, permission name of -->
+    <!--   dynamic receiver not exported checks conflicts between them. -->
+    <!--   Remove this permission, it doesn't affect the testing app's functionality. -->
+    <permission android:name="${applicationId}.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION"
+        tools:node="remove" />
+
     <application
         android:zygotePreloadName="app.grapheneos.hardeningtest.ZygotePreloadImpl" >