Envoy Gateway: Wasm cache ServeHTTP reads mappingPath2Cache without lock

Vulnerability report without repro case. Repro case may be added later after harness is complete. Preconditions 4: - Pod-network reachability to :18002 no auth - Tenant can create EnvoyExtensionPolicy baseline - Attacker pod floods GET while churning EnvoyExtensionPolicy with distinct Wasm URLs -...