runtime: Do not track map key comparisons per key

With a dynamic map, this very quickly overflows the feature table and
stalls fuzzer progress due to the rapidly increasing feature count for
distinct keys.

In the future, we may be able to detect static keys and reenable this
more fine-grained tracking.

Author: fmeum

src/main/java/com/code_intelligence/jazzer/runtime/TraceCmpHooks.java

@@ -816,12 +816,10 @@ public static void mapGet(
     }
     // Modify the hook ID so that compares against distinct valid keys are traced separately.
     if (lowerBoundKey != null) {
-      TraceDataFlowNativeCallbacks.traceGenericCmp(
-          currentKey, lowerBoundKey, hookId + lowerBoundKey.hashCode());
+      TraceDataFlowNativeCallbacks.traceGenericCmp(currentKey, lowerBoundKey, hookId);
     }
     if (upperBoundKey != null) {
-      TraceDataFlowNativeCallbacks.traceGenericCmp(
-          currentKey, upperBoundKey, hookId + upperBoundKey.hashCode());
+      TraceDataFlowNativeCallbacks.traceGenericCmp(currentKey, upperBoundKey, 31 * hookId + 11);
     }
   }