[Test Fix] - Update iframe macro due to change in element structure

• Type: Technical Task
• Status: Closed
• Priority: Minor
• Resolution: Completed
• Affects Version/s: None
• Fix Version/s: Master
• Component/s: Frontend Infrastructure
• Labels: None
• Sprint: S03E21 - Vienna, S03E22 - Tokyo, S03E23 - Olinda
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/87710

Include test fix in PR: https://github.com/liferay-echo/liferay-portal/pull/237#issuecomment-614154988

The tests can no longer find //iframe[contains(@Class,dialog-iframe-node)]. Will probably need to update the locator to something like //iframe[contains(@title,'dialog-iframe-popup')]. There may be additional fixes to make the this work.