chore: add add loader_name to loader_sync_call in trace

[hardfist]

Related issue (if exists)

when we need to debug performance problems, loader_name is very useful for finding the bottleneck of loader cost

Summary

🤖 Generated by Copilot at 7ab3758

Add loader_name field to tracing span in js_loader.rs. This field shows the name of the js loader used for a module, instead of the full path, to improve readability.

Walkthrough

🤖 Generated by Copilot at 7ab3758

• Extract the loader name from the loader path and add it as a field to the tracing span (link)

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Latest commit: acbc0c4

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