Fix part of oppia#5344: Enable Multiple Classrooms (oppia#5510)

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Fixes part of oppia#5344

Toggles the Multiple Classrooms Feature Flag on.

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app/src/sharedTest/java/org/oppia/android/app/profile/PinPasswordActivityTest.kt

@@ -87,9 +87,7 @@ import org.oppia.android.domain.platformparameter.PlatformParameterSingletonModu
 import org.oppia.android.domain.question.QuestionModule
 import org.oppia.android.domain.workmanager.WorkManagerConfigurationModule
 import org.oppia.android.testing.OppiaTestRule
-import org.oppia.android.testing.RunOn
 import org.oppia.android.testing.TestLogReportingModule
-import org.oppia.android.testing.TestPlatform
 import org.oppia.android.testing.espresso.EditTextInputAction
 import org.oppia.android.testing.espresso.TextInputAction.Companion.hasErrorText
 import org.oppia.android.testing.espresso.TextInputAction.Companion.hasNoErrorText
@@ -219,6 +217,7 @@ class PinPasswordActivityTest {
 
   @Test
   fun testPinPassword_withAdmin_inputCorrectPin_opensHomeActivity() {
+    TestPlatformParameterModule.forceEnableMultipleClassrooms(false)
     ActivityScenario.launch<PinPasswordActivity>(
       PinPasswordActivity.createPinPasswordActivityIntent(
         context = context,
@@ -235,7 +234,6 @@ class PinPasswordActivityTest {
   }
 
   @Test
-  @RunOn(TestPlatform.ESPRESSO)
   fun testPinPassword_enableClassrooms_withAdmin_inputCorrectPin_opensClassroomListActivity() {
     TestPlatformParameterModule.forceEnableMultipleClassrooms(true)
     ActivityScenario.launch<PinPasswordActivity>(
@@ -256,6 +254,7 @@ class PinPasswordActivityTest {
 
   @Test
   fun testPinPassword_withUser_inputCorrectPin_opensHomeActivity() {
+    TestPlatformParameterModule.forceEnableMultipleClassrooms(false)
     ActivityScenario.launch<PinPasswordActivity>(
       PinPasswordActivity.createPinPasswordActivityIntent(
         context = context,
@@ -272,7 +271,6 @@ class PinPasswordActivityTest {
   }
 
   @Test
-  @RunOn(TestPlatform.ESPRESSO)
   fun testPinPassword_enableClassrooms_withUser_inputCorrectPin_opensClassroomListActivity() {
     TestPlatformParameterModule.forceEnableMultipleClassrooms(true)
     ActivityScenario.launch<PinPasswordActivity>(
@@ -544,6 +542,7 @@ class PinPasswordActivityTest {
 
   @Test
   fun testPinPassword_withUser_forgot_inputAdminPinAndNewPin_opensHomeActivity() {
+    TestPlatformParameterModule.forceEnableMultipleClassrooms(false)
     ActivityScenario.launch<PinPasswordActivity>(
       PinPasswordActivity.createPinPasswordActivityIntent(
         context = context,

utility/src/main/java/org/oppia/android/util/platformparameter/FeatureFlagConstants.kt

@@ -178,4 +178,4 @@ annotation class EnableMultipleClassrooms
 const val ENABLE_MULTIPLE_CLASSROOMS = "enable_multiple_classrooms"
 
 /** Default value of the feature flag corresponding to [EnableMultipleClassrooms]. */
-const val ENABLE_MULTIPLE_CLASSROOMS_DEFAULT_VALUE = false
+const val ENABLE_MULTIPLE_CLASSROOMS_DEFAULT_VALUE = true