fix(KB-338): wrap allocateId in configLock to prevent race condition

- Add configLock mutex protection around allocateId to prevent concurrent ID allocation race condition

- Create changeset documenting the race condition fix

- Update line counts in existing changeset files

.changeset/fix-id-allocation-race-condition.md

@@ -0,0 +1,5 @@
+---
+"@gsxdsm/fusion": patch
+---
+
+Fix race condition in parallel task creation that could result in incorrect nextId in config.json.