fix: flatten templates/ subfolder after tpz unzip for CI exports

.github/workflows/build_artifacts.yml

@@ -7,7 +7,7 @@ on:
   workflow_dispatch:
     inputs:
       version:
-        description: 'Version to build (e.g., 2.3.8)'
+        description: 'Version to build (e.g., 2.4.0)'
         required: true
         type: string
 
@@ -42,6 +42,15 @@ jobs:
           version: '4.6.0'
           use-dotnet: false
 
+      - name: Setup Export Templates
+        run: |
+          TEMPLATES_DIR=~/.local/share/godot/export_templates/4.6.stable
+          mkdir -p "$TEMPLATES_DIR"
+          wget -q https://github.com/godotengine/godot/releases/download/4.6-stable/Godot_v4.6-stable_export_templates.tpz -O templates.tpz
+          unzip -q templates.tpz -d "$TEMPLATES_DIR"
+          mv "$TEMPLATES_DIR/templates/"* "$TEMPLATES_DIR/"
+          rmdir "$TEMPLATES_DIR/templates"
+
       - name: Setup Android SDK (Android only)
         if: matrix.platform.name == 'Android'
         uses: android-actions/setup-android@v3