[Bug] Using 3D Elevation in combination with tilt and panning results in some tiles not loading

Description

When enabling 3D terrain using a raster-dem source, tilting and panning the map causes vector tiles and 3D buildings to randomly pop in and out. Removing the terrain layer resolves the issue.

Expected Behavior

Tiles should load consistently during tilt and pan interactions.

Steps to Reproduce

1. Set up a basic MapLibre map:

<Map mapStyle="test.json" />

2. Use a style file based on MapTiler Streets v2 (create a free API key).

3. In your test.json style file, add the following source:

"sources": {
  ...
  "terrain_dem": {
    "type": "raster-dem",
    "tiles": [
      "https://some_elevation_api/terrarium/zxy/{z}/{x}/{y}.png"
    ],
    "minzoom": 10,
    "maxzoom": 14,
    "encoding": "terrarium",
    "tileSize": 256,
    "attribution": "Terrarium"
  }
}

4. In the root of the style JSON, enable terrain:

"terrain": {
  "source": "terrain_dem",
  "exaggeration": 1.0
}

https://github.com/user-attachments/assets/3418bdfa-0a9d-4044-acdc-87ef848065d9

Environment

• Framework version: "react-map-gl": "^8.0.4",
• Map library: "maplibre-gl": "^5.5.0",
• Browser: Chrome 137.0.7151.69 (but also happens on any browser)
• OS: macOS Sequoia 15.3.2 (but also happens on Windows/Linux)

Logs

No response

Start by reproducing the issue with the provided React map setup, MapTiler Streets v2 style, and raster-dem terrain source, then inspect how react-map-gl integrates terrain and tilt/pan updates. Done means vector tiles and 3D buildings remain consistently loaded while tilting and panning with terrain enabled, across the reported environments.