Fix "Request-queue UI changes should gracefully handle ne..." flaky tests

[hjetpoluru]

Test failure reported on Nov 4th (Request-queue UI changes should gracefully handle ne...)

Build - Regular
Browser - Firefox
Test Scenario -Request-queue UI changes should gracefully handle network connectivity failure for confirmations @no-mmi
Test Path - /test/e2e/tests/request-queuing/ui.spec.js

Error: waitUntilXWindowHandles timed out polling window handles. Expected: 4, Actual: 3
  (Ran on CircleCI Node 13 of 24, Job test-e2e-firefox)
    at Driver.waitUntilXWindowHandles (test/e2e/webdriver/driver.js:1020:11)
    at async /home/circleci/project/test/e2e/tests/request-queuing/ui.spec.js:752:9
    at async withFixtures (test/e2e/helpers.js:217:5)
    at async Context.<anonymous> (test/e2e/tests/request-queuing/ui.spec.js:697:5)

https://app.circleci.com/pipelines/github/MetaMask/metamask-extension/108611/workflows/14d3701a-a451-4376-9b39-8a45147e08b7/jobs/4062412/tests

Build - Regular
Browser - Firefox
Test Scenario - Request-queue UI changes should gracefully handle network connectivity failure for confirmations @no-mmi
Test Path - /test/e2e/tests/request-queuing/ui.spec.js

TimeoutError: Waiting for element to be located By(xpath, .//*[./@data-testid = 'network-display'] | .//*[./@data-testid = 'signature-request-network-display'][(contains(string(.), 'Localhost 8545') or contains(string(.), 'Localhost8545'))])
Wait timed out after 30035ms
  (Ran on CircleCI Node 0 of 24, Job test-e2e-firefox)
    at /home/circleci/project/node_modules/selenium-webdriver/lib/webdriver.js:929:17
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)

[chloeYue]

still flaky and needs investigation, failure: https://app.circleci.com/pipelines/github/MetaMask/metamask-extension/123503/workflows/5b7efe6e-6c46-48c0-9a25-7700a047c2a6/jobs/4539844/tests