Fix flaky spaces test

[thomheymann]

Fixes #99581

Result from flaky test runner: https://buildkite.com/elastic/kibana-flaky-test-suite-runner/builds/140#3d388c2c-2f3b-4598-966d-e7316add51a9

Result from flaky test runner: https://buildkite.com/elastic/kibana-flaky-test-suite-runner/builds/144#3ae7039d-8ce9-4f91-80a2-e809b6090665

[thomheymann]

@elasticmachine merge upstream

[elasticmachine]

Pinging @elastic/kibana-security (Team:Security)

[kibanamachine]

💚 Build Succeeded

• Buildkite Build
• Commit: 40fa5b7
• Storybooks Preview

Metrics [docs]

✅ unchanged

History

• 💔 Build #4052 failed 1346bbc

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@elasticmachine merge upstream

[jportner]

This test has a history of flakiness, but the flaky test runner hasn't given us any issues this time around.

I'm a bit concerned that we haven't found whatever might have been causing the flaky behavior before. However, all of the old builds are from Jenkins and long since deleted, so we don't have much to go off of.
I looked around a bit in the popover code and nothing really stood out to me tbh.

I guess we can go ahead and merge this and hope for the best, at least if it starts failing again we'll have permanent Buildkite data from the new test failures.

P.S. we should backport this to 8.0 and 7.16, I'll add the labels

[kibanamachine]

💚 Backport successful

Status	Branch	Result
✅	8.0
✅	7.16

The backport PRs will be merged automatically after passing CI.

[kibanamachine]

Looks like this PR has backport PRs but they still haven't been merged. Please merge them ASAP to keep the branches relatively in sync.