Fix JavadocsBackticksUse: Replace backticks with {@code} tags

Summary:
Fixed JavadocsBackticksUse lint warning in FabricUIManager.java.

Replaced markdown-style backticks with proper javadoc {code ...} tags for
code references in the receiveEvent method documentation.

changelog: [internal] internal

Differential Revision: D91841151

Author: mdvacca

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/fabric/FabricUIManager.java

@@ -1053,11 +1053,11 @@ public void receiveEvent(
   }
 
   /**
-   * receiveEvent API that emits an event to C++. If `canCoalesceEvent` is true, that signals that
-   * C++ may coalesce the event optionally. Otherwise, coalescing can happen in Java before
+   * receiveEvent API that emits an event to C++. If {@code canCoalesceEvent} is true, that signals
+   * that C++ may coalesce the event optionally. Otherwise, coalescing can happen in Java before
    * emitting.
    *
-   * <p>`customCoalesceKey` is currently unused.
+   * <p>{@code customCoalesceKey} is currently unused.
    *
    * @param surfaceId
    * @param reactTag