Address flaky UI tests

[staskus]

Description

Flaky tests require retries to make the test suite pass minimizing their value and wasting time.

Proposed solution

1. Check Buildkite for flaky tests
2. Go through the flaky tests in the code
3. Identify the importance of the test and reasons for failure
4. Choose either to delete or rewrite the flaky test depending on the importance of the test and the difficulty in fixing it

More context: pcdRpT-371-p2