Autotests: Replace Undo/Redo operations with valid helper functions

[AlexeyGirin]

Identify all Undo/Redo operations made by keyboard Control+Z, Control+Shift+Z and by using methods
selectTopPanelButton(TopPanelButton.Undo, page);, await selectTopPanelButton(TopPanelButton.Redo, page);
and replace them with
Undo operation ==> pressUndoButton(page)
Redo operation ==> pressRedoButton(page)
methods

Recommendation: Try to search "page.keyboard.press(" in code
That could be page.keyboard.press('Control+Z');
or page.keyboard.press('${modifier}+KeyZ'); or similar