[golang/go] testing: tests killed with "signal: killed" on go1.26.1 (regression from go1.25.7)

### ROOT CAUSE The issue occurs due to the Go test runner's increased resource usage or parallelism in Go 1.26.1 compared to Go 1.25.7, causing the system to kill test processes with "signal: killed". This is likely a regression in the test runner's behavior, exacerbated by resource constraints or parallel test execution. ### CODE FIX 1. **Limit Test Parallelism**: Reduce the default parallelism of the test runner to prevent resource exhaustion. ```bash go test -parallel 1 ``` 2. **Check System Limits**: Ensure system resource limits (e.g., memory, file descriptors) are adequate. Increase `ulimit` if necessary. ```bash ulimit -a # Check current limits ulimit -n 1024 # Example: Increase open files limit ``` 3. **Update Go Version**: Upgrade to a newer Go version if available, as the issue may be fixed in later releases. These steps address the regression by controlling resource usage and parallelism.