Removing FF guard for canListenToDownloadWillBeginEvent (#16439)

* This test is now passing in Firefox.

* Fixing JS test

Author: diemol

java/test/org/openqa/selenium/bidi/browsingcontext/BrowsingContextInspectorTest.java

@@ -235,7 +235,6 @@ void canListenToNavigationCommittedEvent()
 
   @Test
   @NeedsFreshDriver
-  @NotYetImplemented(FIREFOX)
   void canListenToDownloadWillBeginEvent()
       throws ExecutionException, InterruptedException, TimeoutException {
     try (BrowsingContextInspector inspector = new BrowsingContextInspector(driver)) {

javascript/selenium-webdriver/test/bidi/network_test.js

@@ -97,8 +97,8 @@ suite(
 
         assert.equal(beforeRequestEvent[0].request.method, 'GET')
         assert(beforeRequestEvent[0].request.url.includes('redirected_http_equiv.html'))
-        assert.equal(beforeRequestEvent[2].request.method, 'GET')
-        assert(beforeRequestEvent[2].request.url.includes('redirected.html'))
+        assert.equal(beforeRequestEvent[1].request.method, 'GET')
+        assert(beforeRequestEvent[1].request.url.includes('redirected.html'))
       })
 
       it('can subscribe to response started', async function () {