Bug 1694179 - Add workaround for getNetworkLinkType on Android 11. r=…

…esawin, a=RyanVM

I have a better fix but let's land this in the meanwhile as this crashes at
startup on any Android 11 device.

Differential Revision: https://phabricator.services.mozilla.com/D106547

mobile/android/geckoview/src/main/java/org/mozilla/gecko/GeckoAppShell.java

@@ -1197,7 +1197,16 @@ private static int getNetworkLinkType() {
             return LINK_TYPE_UNKNOWN;
         }
 
-        switch (tm.getNetworkType()) {
+        final int networkType;
+
+        try {
+            // Bug 1694179 workaround, on Android 11 this throws
+            networkType = tm.getNetworkType();
+        } catch (final Exception ex) {
+            return LINK_TYPE_4G;
+        }
+
+        switch (networkType) {
             case TelephonyManager.NETWORK_TYPE_IDEN:
             case TelephonyManager.NETWORK_TYPE_CDMA:
             case TelephonyManager.NETWORK_TYPE_GPRS: