Improve the logic to let source peers be consistent with C++ peers (maplibre#3561)

Author: grab-liyanjin

platform/android/MapLibreAndroid/src/main/java/org/maplibre/android/maps/Style.java

@@ -160,8 +160,11 @@ public <T extends Source> T getSourceAs(@NonNull String sourceId) {
    */
   public boolean removeSource(@NonNull String sourceId) {
     validateState("removeSource");
-    sources.remove(sourceId);
-    return nativeMap.removeSource(sourceId);
+    boolean successful = nativeMap.removeSource(sourceId);
+    if (successful) {
+      sources.remove(sourceId);
+    }
+    return successful;
   }
 
   /**
@@ -172,8 +175,11 @@ public boolean removeSource(@NonNull String sourceId) {
    */
   public boolean removeSource(@NonNull Source source) {
     validateState("removeSource");
-    sources.remove(source.getId());
-    return nativeMap.removeSource(source);
+    boolean successful = nativeMap.removeSource(source);
+    if (successful) {
+      sources.remove(source.getId());
+    }
+    return successful;
   }
 
   //