Fuzz blockers

The following nodes represent call sites where fuzz blockers occur.

Amount of callsites blocked	Calltree index	Parent function	Callsite	Largest blocked function
3	0	EP	call site: {node_id}

Fuzzer calltree


         LLVMFuzzerTestOneInput

[function] [call site] 00000


           parquet::arrow::internal::FuzzReader

[function] [call site] 00001


           static_cast<int64_t>

[function] [call site] 00002


           ARROW_UNUSED

[function] [call site] 00003