Crash in AddSwitchChainNetworkFragment

[SergeyZhukovsky]

I found that crash in Google Play Console on nightly 1.67.76. It's fine to just fix it in master as we don't have a lot of them.

Exception org.chromium.base.JniAndroid$UncaughtExceptionException:
  at org.chromium.base.JniAndroid$UncaughtExceptionException.<init> (JniAndroid.java:49)
  at org.chromium.base.JniAndroid.handleException (JniAndroid.java:89)
  at android.os.MessageQueue.nativePollOnce
  at android.os.MessageQueue.next (MessageQueue.java:325)
  at android.os.Looper.loop (Looper.java:142)
  at android.app.ActivityThread.main (ActivityThread.java:7000)
  at java.lang.reflect.Method.invoke
  at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run (RuntimeInit.java:441)
  at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:1408)
Caused by java.lang.ArrayIndexOutOfBoundsException: length=0; index=0
  at org.chromium.chrome.browser.crypto_wallet.fragments.dapps.AddSwitchChainNetworkFragment.lambda$fetchNetworkInfo$5 (AddSwitchChainNetworkFragment.java:184)
  at org.chromium.brave_wallet.mojom.JsonRpcService_Internal$JsonRpcServiceGetPendingAddChainRequestsResponseParamsForwardToCallback.accept (JsonRpcService_Internal.java:2835)
  at org.chromium.mojo.bindings.RouterImpl.handleIncomingMessage (RouterImpl.java:222)
  at org.chromium.mojo.bindings.RouterImpl$HandleIncomingMessageThunk.accept (RouterImpl.java:29)
  at org.chromium.mojo.bindings.Connector.readAndDispatchMessage (Connector.java:194)
  at org.chromium.mojo.bindings.Connector.readOutstandingMessages (Connector.java:159)
  at org.chromium.mojo.bindings.Connector.onWatcherResult (Connector.java:137)
  at org.chromium.mojo.bindings.Connector$WatcherCallback.onResult (Connector.java:128)
  at org.chromium.mojo.system.impl.WatcherImpl.onHandleReady (WatcherImpl.java:60)