chore(webapp): drop mollifier gate divert logs to debug

Shadow-mode and live-divert logs both fire on the trigger hot path;
rely on the mollifier.decisions OTel counter for production visibility.

apps/webapp/app/v3/mollifier/mollifierGate.server.ts

@@ -89,7 +89,7 @@ function logDivertDecision(
   inputs: GateInputs,
   decision: Extract<TripDecision, { divert: true }>,
 ): void {
-  logger.info(message, {
+  logger.debug(message, {
     envId: inputs.envId,
     orgId: inputs.orgId,
     taskId: inputs.taskId,