[trunk-sim] importer: unskip all tests with test tenants (#659)

## Simulation PR for trunk Merge Queue

This PR simulates the behavior of original PR 155563 from timeline.

### Original PR Details
- **Title**: importer: unskip all tests with test tenants
- **Author**: yuzefovich
- **Base Branch**: master

### Simulation Details
- **Vendor**: trunk
- **Target Base**: master-trunk
- **Simulation Time**: 2025-12-01T14:08:10+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: rishabh7m

simulation-readme-20251201-140806.md

@@ -0,0 +1,27 @@
+# PR Simulation README
+
+## Simulation Details
+- **Timestamp**: 2025-12-01T14:08:06+05:30
+- **Original PR**: #155563
+- **Original Title**: importer: unskip all tests with test tenants
+- **Original Author**: yuzefovich
+- **Original URL**: https://github.com/cockroachdb/cockroach/pull/155563
+
+## Original PR Timeline
+- **Created**: 2025-10-17T03:34:35Z
+- **Queue Entry**: N/A
+- **CI Start**: N/A
+- **CI Completion**: N/A
+- **Merged**: 2025-10-17T17:49:59Z
+
+## 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 2025-12-01T14:08:07+05:30*