Fix head version tests, add `ClickHouseSummary. real_time_microseconds`

[slvrtrn]

Summary

• Add optional real_time_microseconds to ClickHouseSummary
• Fix summary assertions with head CH version after https://github.com/ClickHouse/ClickHouse/pull/69032

Checklist

• [x] Unit and integration tests covering the common scenarios were added
• [x] A human-readable description of the changes was provided to include in CHANGELOG

[sonarcloud[bot]]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud