Fix existing integration test (#8854)

The `isVisible` function was not found; I expect maybe it was from a
previous version of dependencies or something. I also specified ms
between text input because it feels very slow. I don't see an option to
just paste with the keyboard but maybe that exists elsewhere.

---------

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

Author: helin24

testSrc/integration/io/flutter/integrationTest/utils/NewProject.kt

@@ -66,7 +66,7 @@ fun newProjectWelcomeScreen(run: BackgroundRun, testProjectName: String) {
   run.driver.withContext {
     // Assert that the welcome screen is visible before interacting with it.
     welcomeScreen {
-      assert(isVisible())
+      assert(present())
       println("Creating the new project from Welcome Screen")
       createNewProjectButton.click()
 
@@ -94,7 +94,7 @@ fun newProjectWelcomeScreen(run: BackgroundRun, testProjectName: String) {
         wait(1.seconds)
 
         keyboard {
-          typeText(testProjectName)
+          typeText(testProjectName, delayBetweenCharsInMs = 60)
         }
         createButton.click()
       }