Handle 'TrustAuthor' popup in factory and WorkspaceWithParent tests

[dmytro-ndp]

What does this PR do?

Fix Factory test failure eclipse-che/che-server#708 (comment)

Failed test logs:
https://gcsweb-ci.apps.ci.l2s4.p1.openshiftapps.com/gcs/test-platform-results/pr-logs/pull/eclipse-che_che-server/708/pull-ci-eclipse-che-che-server-main-v14-gitlab-with-oauth-setup-flow/1824432770110197760/build-log.txt

Screenshot/screencast of this PR

What issues does this PR fix or reference?

#23063

How to test this PR?

Factory test has passed Trust author popup: https://main-jenkins-csb-crwqe.apps.ocp-c1.prod.psi.redhat.com/job/Testing/job/e2e/job/basic/job/typescript-tests/24953/console

...
14:32:48            ▼ BrowserTabsUtil.navigateTo - https://devspaces.apps.ocp416.crw-qe.com/dashboard/#/https://github.com/eclipse-che/che-server.git
14:32:48              ‣ DriverHelper.navigateToUrl
14:32:48              ‣ DriverHelper.getDriver
14:32:48            ▼ CreateWorkspace.performTrustAuthorPopup
14:32:48            ▼ TrustAuthorPopup.clickContinue
14:32:48            ▼ TrustAuthorPopup.waitPopupIsOpened
14:32:48              ‣ DriverHelper.waitVisibility - By(xpath, //span[contains(text(), "Do you trust the authors of this repository?")])
14:32:48              ‣ DriverHelper.waitVisibility - element is located and is visible.
14:32:48              ‣ DriverHelper.waitAndClick - By(xpath, //button[text()="Continue"])
14:32:48              ‣ DriverHelper.waitVisibility - By(xpath, //button[text()="Continue"])
14:32:48              ‣ DriverHelper.waitVisibility - element is located and is visible.
14:32:48      ✔ Navigate to the factory URL
14:32:48              ‣ DriverHelper.getDriver
...

PR Checklist

As the author of this Pull Request I made sure that:

• The Eclipse Contributor Agreement is valid
• Code produced is complete
• Code builds without errors
• Tests are covering the bugfix or new feature
• The repository devfile is up to date and works
• Sections What issues does this PR fix or reference and How to test this PR completed
• Relevant user documentation updated
• Relevant contributing documentation updated
• CI/CD changes implemented, documented and communicated

Reviewers

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