[CQ] API: migrate FlutterSdkManager off deprecated afterLibraryRenamed (#8124)

Move to the stable `afterLibraryRenamed` API variant.


![image](https://github.com/user-attachments/assets/46f4971f-0955-49eb-9338-78faba823aec)

See: #7718

---

- [x] I’ve reviewed the contributor guide and applied the relevant
portions to this PR.

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Author: pq

flutter-idea/src/io/flutter/sdk/FlutterSdkManager.java

@@ -15,6 +15,7 @@
 import com.intellij.openapi.util.Disposer;
 import com.intellij.util.EventDispatcher;
 import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
 
 import java.util.EventListener;
 import java.util.Objects;
@@ -124,7 +125,7 @@ public void afterLibraryAdded(@NotNull Library newLibrary) {
     }
 
     @Override
-    public void afterLibraryRenamed(@NotNull Library library) {
+    public void afterLibraryRenamed(@NotNull Library library, @Nullable String newName) {
       // Since we key off name, test to be safe.
       checkForFlutterSdkChange();
     }