Fix KQL parser depth and backtracks counter propagation

[yakov-olkhovskiy]

This is a dedicated PR created from commit 8f9090355e872a3cea1f1c54df7f030a8b76e9dd.

It fixes KQL parser logic where depth and parser-backtracks counters could be lost while passing through KQL parser components, which could weaken parser-limit accounting and error behavior for complex KQL queries.

Reference PR with related recent parser/CI context: #99740

Changelog category (leave one):

• Improvement

Changelog entry (a user-readable short description of the changes that goes into CHANGELOG.md):

Improved KQL parser robustness by preserving parser depth and backtracks counters across KQL parser stages, so parser limits are tracked consistently for complex KQL queries.

Documentation entry for user-facing changes

• Documentation is written (mandatory for new features)

  

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2 out of 3 committers have signed the CLA.

✅ alexey-milovidov
✅ yakov-olkhovskiy
❌ cursoragent
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[yakov-olkhovskiy]

closing AIs mess