[aviator-sim] sql/schemachanger: clean up triggers before their references (#242)

## Simulation PR for aviator Merge Queue

This PR simulates the behavior of original PR 155777 from timeline.

### Original PR Details
- **Title**: sql/schemachanger: clean up triggers before their references
- **Author**: fqazi
- **Base Branch**: master

### Simulation Details
- **Vendor**: aviator
- **Target Base**: master-aviator
- **Simulation Time**: 2025-11-20T22:48:32+05:30

### Timeline Replication
This PR will replicate the timing patterns from the original PR with time compression applied.

---
*This is an automated simulation PR for merge queue vendor comparison.*

Author: aviator-app[bot]

simulation-readme-20251120-224826.md

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+# PR Simulation README
+
+## Simulation Details
+- **Timestamp**: 2025-11-20T22:48:26+05:30
+- **Original PR**: #155777
+- **Original Title**: sql/schemachanger: clean up triggers before their references
+- **Original Author**: fqazi
+- **Original URL**: https://github.com/cockroachdb/cockroach/pull/155777
+
+## Original PR Timeline
+- **Created**: 2025-10-21T15:38:42Z
+- **Queue Entry**: N/A
+- **CI Start**: N/A
+- **CI Completion**: N/A
+- **Merged**: 2025-10-22T11:49:15Z
+
+## Simulation Purpose
+This PR is part of a merge queue vendor comparison simulation.
+It replicates the timing and behavior of the original PR for testing purposes.
+
+## Timing Information
+- **CI Wait Duration**: N/A
+- **CI Run Duration**: N/A  
+- **Total Queue Duration**: N/A
+
+---
+*Generated by pr-simulation tool at 2025-11-20T22:48:28+05:30*