remove morph animation FFI-specific methods (regular methods are OK to use outside the engine thread)

lib/filament_controller.dart

@@ -247,6 +247,8 @@ abstract class FilamentController {
 
   ///
   /// Set the weights for all morph targets under node [meshName] in [entity] to [weights].
+  /// Note that [weights] must contain values for ALL morph targets, but no exception will be thrown if you don't do so (you'll just get incorrect results).
+  /// If you only want to set one value, set all others to zero (check [getMorphTargetNames] if you need the get a list of all morph targets.)
   ///
   Future setMorphTargetWeights(
       FilamentEntity entity, String meshName, List<double> weights);

lib/filament_controller_ffi.dart

@@ -595,9 +595,11 @@ class FilamentControllerFFI extends FilamentController {
     for (int i = 0; i < weights.length; i++) {
       weightsPtr.elementAt(i).value = weights[i];
     }
-    set_morph_target_weights_ffi(_assetManager!, entity,
-        meshName.toNativeUtf8().cast<Char>(), weightsPtr, weights.length);
+    var meshNamePtr = meshName.toNativeUtf8(allocator: calloc).cast<Char>();
+    set_morph_target_weights(
+        _assetManager!, entity, meshNamePtr, weightsPtr, weights.length);
     calloc.free(weightsPtr);
+    calloc.free(meshNamePtr);
   }
 
   @override

lib/generated_bindings.dart

@@ -1019,40 +1019,6 @@ external void apply_weights_ffi(
   int count,
 );
 
-@ffi.Native<
-        ffi.Void Function(ffi.Pointer<ffi.Void>, EntityId,
-            ffi.Pointer<ffi.Char>, ffi.Pointer<ffi.Float>, ffi.Int)>(
-    symbol: 'set_morph_target_weights_ffi', assetId: 'flutter_filament_plugin')
-external void set_morph_target_weights_ffi(
-  ffi.Pointer<ffi.Void> assetManager,
-  int asset,
-  ffi.Pointer<ffi.Char> entityName,
-  ffi.Pointer<ffi.Float> morphData,
-  int numWeights,
-);
-
-@ffi.Native<
-        ffi.Bool Function(
-            ffi.Pointer<ffi.Void>,
-            EntityId,
-            ffi.Pointer<ffi.Char>,
-            ffi.Pointer<ffi.Float>,
-            ffi.Pointer<ffi.Int>,
-            ffi.Int,
-            ffi.Int,
-            ffi.Float)>(
-    symbol: 'set_morph_animation_ffi', assetId: 'flutter_filament_plugin')
-external bool set_morph_animation_ffi(
-  ffi.Pointer<ffi.Void> assetManager,
-  int asset,
-  ffi.Pointer<ffi.Char> entityName,
-  ffi.Pointer<ffi.Float> morphData,
-  ffi.Pointer<ffi.Int> morphIndices,
-  int numMorphTargets,
-  int numFrames,
-  double frameLengthInMs,
-);
-
 @ffi.Native<
         ffi.Void Function(ffi.Pointer<ffi.Void>, EntityId, ffi.Int, ffi.Bool,
             ffi.Bool, ffi.Bool, ffi.Float)>(