Refactor AjaxTest

Closes #3396536

changed title from Space so I can rebase from UI. to Refactor AjaxTest

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• 7ecdfbdc...3ad9ff98 - 135 commits from branch project:11.x
• 21d468e0 - Space so I can rebase from UI.

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added 1 commit

• 130f0df7 - Refactor test.

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added 1 commit

• 9dc9b1b7 - Fix spacing.

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• 3d741f87 - Line not needed.

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added 1 commit

• c6b5328e - Leave as it was.

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My suggestion would be to remove this block altogether as we have no reliable way to check the change of focus and we could still get a random fail.

I'd remove from this line to $this->assertEquals('edit-textfield-2', $has_focus_id);

changed this line in version 7 of the diff

added 1 commit

• f9cc05f7 - Remove portion of test.

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added 7 commits

• 0ce88f3f - 1 commit from branch project:11.x
• 1c1026e0 - Space so I can rebase from UI.
• eaf8aef3 - Refactor test.
• c48cacbf - Fix spacing.
• a76661d3 - Line not needed.
• 2a96d288 - Leave as it was.
• 3cf04b77 - Remove portion of test.

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