x/sync: add locks for peerTracker #1756
Merged
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Resolves: #1750
Replaces: #1751
Why this should be merged
Fixes issues with concurrent map accesses during sync.
It seems this data structure could be used concurrently (comparatively the locking overhead seems small).
How this works
Adds lock for the peer tracker.
How this was tested
UT, hyper SDK CI ava-labs/hypersdk#272