[ES|QL] Unskip remaining tests that no longer fail after #172220

[davismcphee]

Summary

This PR unskips the remaining skipped tests that no longer fail after the fix to ES|QL time_zone param in #172220.

Resolves #172247.
Resolves #172246.
Resolves #172248.

Checklist

• Any text added follows EUI's writing guidelines, uses sentence case text and includes i18n support
• Documentation was added for features that require explanation or tutorials
• Unit or functional tests were updated or added to match the most common scenarios
• Flaky Test Runner was used on any tests changed
• Any UI touched in this PR is usable by keyboard only (learn more about keyboard accessibility)
• Any UI touched in this PR does not create any new axe failures (run axe in browser: FF, Chrome)
• If a plugin configuration key changed, check if it needs to be allowlisted in the cloud and added to the docker list
• This renders correctly on smaller devices using a responsive layout. (You can test this in your browser)
• This was checked for cross-browser compatibility

For maintainers

• This was checked for breaking API changes and was labeled appropriately

[kibana-ci]

💛 Build succeeded, but was flaky

• Buildkite Build
• Commit: 1e96ffb

Failed CI Steps

• Investigations - Security Solution Cypress Tests #3

Test Failures

• [job] [logs] Investigations - Security Solution Cypress Tests #3 / Timelines saves timeline as new should save timelines as new should save timelines as new

Metrics [docs]

✅ unchanged

To update your PR or re-run it, just comment with:
@elasticmachine merge upstream

cc @davismcphee

[elasticmachine]

Pinging @elastic/kibana-data-discovery (Team:DataDiscovery)

[jughosta]

LGTM 👍