Fix robot tests randomly failing

[wesleybl]

• Wait for tile edit popup to close before trying to click on another link. We were trying to click on the link before the popup closed, causing the error:

Test Basic Tile                                                       | FAIL |
  StaleElementReferenceException: Message: The element reference of <a class="" href="http://localhost:33931/plone/title-1/?_authenticator=8fe8b900ec8d49c2a19ba16dd97650a9f4309431"> is stale; either the element is no longer attached to the DOM, it is not in the current frame context, or the document has been refreshed

fixes #932

• Wait a few seconds before trying to delete a cove. We are updating the content and will soon save and delete. The time between saving and deleting was short, causing Plone to assume that the content was still locked when trying to delete. This caused the error in Plone:

  ResourceLockedError: Object 'title-1' is locked.

See:

This caused the following error in test robot:

  ==============================================================================
  Test Cover                                                                    
  ==============================================================================
  Test CRUD                                                             | FAIL |
  Page should have contained text 'has been deleted' but did not.
  ------------------------------------------------------------------------------
  Test Cover                                                            | FAIL |
  1 critical test, 0 passed, 1 failed
  1 test total, 0 passed, 1 failed

Fixes: https://github.com/collective/collective.cover/actions/runs/4087391783/jobs/7048099546

[codecov-commenter]

Codecov Report

Merging #935 (91c64fe) into master (8844cf3) will not change coverage. The diff coverage is n/a.

:mega: This organization is not using Codecov’s GitHub App Integration. We recommend you install it so Codecov can continue to function properly for your repositories. Learn more

@@           Coverage Diff           @@
##           master     #935   +/-   ##
=======================================
  Coverage   92.86%   92.86%           
=======================================
  Files          50       50           
  Lines        2930     2930           
=======================================
  Hits         2721     2721           
  Misses        209      209           

---

Continue to review full report at Codecov.

Legend - Click here to learn more Δ = absolute <relative> (impact), ø = not affected, ? = missing data Powered by Codecov. Last update 8844cf3...91c64fe. Read the comment docs.