Fill Extrusion Layer flickering and rendering issue

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While "fill-extrusion-ambient-occlusion-intensity" is greater than 0, setting fill extrusion layer with opacity less than 1 and height calculated by case expression makes all features flicker and have rendering artefacts.

Example with flickering:

```dart
await mapboxMap.style.addSource(GeoJsonSource(
id: sourceName,
data: geoJsonSource,
));

String someLayer = jsonEncode({
"id": layerName,
"type": "fill-extrusion",
"source": sourceName,
"paint": {
"fill-extrusion-ambient-occlusion-intensity": 0.5,
"fill-extrusion-ambient-occlusion-wall-radius": 20,
"fill-extrusion-ambient-occlusion-ground-radius": 20,
"fill-extrusion-ambient-occlusion-ground-attenuation": 0.5,
"fill-extrusion-opacity": 0.9,
"fill-extrusion-height": [
"case",
[
"==",
["get", "someState"],
true
],
10,
5
],
"fill-extrusion-color": [
"case",
[
"==",
["get", "someState"],
true
],
["get", "color"],
"#FFFFFF"
],
}
});

await mapboxMap.style
.addPersistentStyleLayer(someLayer, layerPosition);
```

Example with no flickering:

```dart
await mapboxMap.style.addSource(GeoJsonSource(
id: sourceName,
data: geoJsonSource,
));

String someLayer = jsonEncode({
"id": layerName,
"type": "fill-extrusion",
"source": sourceName,
"paint": {
"fill-extrusion-ambient-occlusion-intensity": 0.5,
"fill-extrusion-ambient-occlusion-wall-radius": 20,
"fill-extrusion-ambient-occlusion-ground-radius": 20,
"fill-extrusion-ambient-occlusion-ground-attenuation": 0.5,
"fill-extrusion-opacity": 0.9,
"fill-extrusion-height": 10,
"fill-extrusion-color": [
"case",
[
"==",
["get", "someState"],
true
],
["get", "color"],
"#FFFFFF"
],
}
});

await mapboxMap.style
.addPersistentStyleLayer(someLayer, layerPosition);
```

Removing ambient occlusion, using just a static number for height or setting opacity to 1 will solve the issue but makes it impossible to achieve the needed visual presentation for my layer.

Start with the provided Dart reproduction in the issue and compare the two fill-extrusion configurations, focusing on ambient occlusion, opacity, and expression-based height. Trace whether the behavior is introduced by the Flutter integration or the underlying Mapbox rendering implementation; done means the layer renders without flickering or artefacts under the reported conditions.

Written by the indexing model from the issue text.