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perf: nocallback and noescape cgo flags #1406

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AlliBalliBaba
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go 1.24 has some new flags to optimize cgo calls: nocallback and noescape:
https://pkg.go.dev/cmd/cgo@master#hdr-Optimizing_calls_of_C_code

While the perfomance gain from adding these flags isn't immediately obvious in the flamegraphs, it's nice that both of these flags conform to how we are currently using cgo.

nocallback will panic for any go -> c -> go call, which is also what we are currently avoiding since it breaks Fibers.

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