Re-enable AwSettingsTest#testJavaScriptPopupsOpenTwice

TEST=run_webview_instrumentation_test_apk --num_retries=0 --repeat=1000 --break-on-failure -f=AwSettingsTest#testJavaScriptPopupsOpenTwice

Bug: 957626
Change-Id: I160f8a816a6190dfb0962c80c2d86d3e5d2410e7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1875484Reviewed-by: Changwan Ryu <changwan@chromium.org>
Commit-Queue: Oksana Zhuravlova <oksamyt@chromium.org>
Cr-Commit-Position: refs/heads/master@{#710831}

android_webview/javatests/src/org/chromium/android_webview/test/AwSettingsTest.java

@@ -2345,7 +2345,6 @@ public class AwSettingsTest {
     @Test
     @SmallTest
     @Feature({"AndroidWebView", "Preferences"})
-    @DisabledTest(message = "crbug.com/957626")
     public void testJavaScriptPopupsOpenTwice() throws Throwable {
         final ViewPair views = createViews();
         runPerViewSettingsTest(new AwSettingsJavaScriptPopupsTestHelper(