Added check to handle all cases of MissingWebViewPackageException (#2…

…6189)

Summary:
We have been experiencing the below crashes in our Flipkart Android app:

![image](https://user-images.githubusercontent.com/16662518/63784983-2be9a100-c90d-11e9-998d-2e5085f1dec6.png)
![image](https://user-images.githubusercontent.com/16662518/63784988-3146eb80-c90d-11e9-89d4-18693b566284.png)

Stack overflow thread for the issue that is causing this crash: [https://stackoverflow.com/a/56246743](https://stackoverflow.com/a/56246743)

The change I have done is an enhancement on the following PR which got merged to master: [https://github.com/facebook/react-native/pull/24533](https://github.com/facebook/react-native/pull/24533)

The exception handling for this crash already exists but it relies on having a specific string in the error message ("Webview not installed"). But the error message for the crashes above does not include this string.

I have added a check for all the crashes involving the `MissingWebViewPackageException`.
Refer the file: [https://android.googlesource.com/platform/frameworks/base/+/master/core/java/android/webkit/WebViewFactory.java#102](https://android.googlesource.com/platform/frameworks/base/+/master/core/java/android/webkit/WebViewFactory.java#102)

## Changelog

[ANDROID] [Fixed] - The ReactCookieJarContainer/ForwardingCookieHandler now handles all the cases of missing WebView exceptions gracefully.
Pull Request resolved: #26189

Test Plan:
No new tests have been added.
CI should pass.

This fix was made based on the exception stacktrace. I have not spent the time to acquire one of the devices that it is happening on.

Differential Revision: D17258881

Pulled By: cpojer

fbshipit-source-id: 3abb061e345329214025ebab2b3a908f9cce434d

ReactAndroid/src/main/java/com/facebook/react/modules/network/ForwardingCookieHandler.java

@@ -184,8 +184,12 @@ protected void doInBackgroundGuarded(Void... params) {
         // We cannot catch MissingWebViewPackageException as it is in a private / system API
         // class. This validates the exception's message to ensure we are only handling this
         // specific exception.
-        // https://android.googlesource.com/platform/frameworks/base/+/master/core/java/android/webkit/WebViewFactory.java#98
-        if (message != null && message.contains("No WebView installed")) {
+        // https://android.googlesource.com/platform/frameworks/base/+/master/core/java/android/webkit/WebViewFactory.java#348
+        if (message != null
+            && exception
+                .getClass()
+                .getCanonicalName()
+                .equals("android.webkit.WebViewFactory.MissingWebViewPackageException")) {
           return null;
         } else {
           throw exception;