Reset flights between tests, Fixes AB#3413737 (#2794)

The testcase testUrlOverrideHandlesNonceRedirectUrl was failing because
there was a new testcase introduced in the class where we were setting
flights but we missed resetting them before the next testcase runs.
Fix : Resetting flights between the UTs
Additional fix : There was a change that was relying on the state of
flights set in previous tests which was incorrect. Correcting this as
well.
Fixes
[AB#3413737](https://identitydivision.visualstudio.com/fac9d424-53d2-45c0-91b5-ef6ba7a6bf26/_workitems/edit/3413737)

Author: somalaya

common/src/test/java/com/microsoft/identity/common/internal/ui/webview/AzureActiveDirectoryWebViewClientTest.java

@@ -62,6 +62,7 @@
 import com.microsoft.identity.common.java.ui.webview.authorization.IAuthorizationCompletionCallback;
 import com.microsoft.identity.common.shadows.ShadowProcessUtil;
 
+import org.junit.After;
 import org.junit.Assert;
 import org.junit.Before;
 import org.junit.Test;
@@ -159,6 +160,11 @@ public void onPageLoaded(final String url) {
         }
     }
 
+    @After
+    public void cleanUp(){
+        CommonFlightsManager.INSTANCE.resetFlightsManager();
+    }
+
     @Test(expected = IllegalArgumentException.class)
     public void testUrlOverrideHandlesEmptyString() {
         assertTrue(mWebViewClient.shouldOverrideUrlLoading(mMockWebView, ""));
@@ -489,6 +495,11 @@ public void testOnReceivedSslError_Legacy() {
         final SslError mockError = Mockito.mock(android.net.http.SslError.class);
         final IAuthorizationCompletionCallback mockCallback = Mockito.mock(IAuthorizationCompletionCallback.class);
         when(mockError.getUrl()).thenReturn("https://example.com");
+        final IFlightsManager mockFlightsManager = Mockito.mock(IFlightsManager.class);
+        final IFlightsProvider mockFlightsProvider = Mockito.mock(IFlightsProvider.class);
+        when(mockFlightsProvider.isFlightEnabled(eq(CommonFlight.SHOULD_PRESERVE_WEBVIEW_FLOW_ON_SSL_ERROR))).thenReturn(false);
+        when(mockFlightsManager.getFlightsProvider(anyLong())).thenReturn(mockFlightsProvider);
+        CommonFlightsManager.INSTANCE.initializeCommonFlightsManager(mockFlightsManager);
         final AzureActiveDirectoryWebViewClient mockWebViewClient = new AzureActiveDirectoryWebViewClient(
                 mActivity,
                 mockCallback,