[Toast] Add query_length for launcher latency logging.

Bug: 235249335
Test: no test needed.
Change-Id: Ia16c241a2eb3cb50a17713216182192f7902be9e

src/com/android/launcher3/logging/StatsLogManager.java

@@ -771,6 +771,13 @@ public class StatsLogManager implements ResourceBasedOverride {
             return this;
         }
 
+        /**
+         * Sets query length of the event.
+         */
+        default StatsLatencyLogger withQueryLength(int queryLength) {
+            return this;
+        }
+
         /**
          * Sets packageId of log message.
          */