Add backtrace_full method to FullBacktraceCollector for multi-threaded trace collection

[saruman9]

Description

This PR extends the FullBacktraceCollector with a new backtrace_full method to address limitations in multi-threaded environments. While trace information is collected from all threads, it's stored in the Thread Local Storage of individual threads. The existing backtrace method only accesses the current thread's TLS, making it impossible to retrieve traces from threads that have already terminated. The new backtrace_full method aggregates trace information from all available thread storage, including data from threads that no longer exist, ensuring complete trace collection across the entire system.

Checklist

• I have run ./scripts/precommit.sh and addressed all comments

[domenukk]

Thanks!