Fix experimental properties generation, bump style spec (#2399)

Author: persidskiy

CHANGELOG.md

@@ -4,6 +4,11 @@ Mapbox welcomes participation and contributions from everyone.
 
 ## main
 
+* Mark `SymbolElevationReference`, `FillExtrusionBaseAlignment`, `FillExtrusionHeightAlignment`,  `ModelScaleMode`, `ModelType`, `ClipLayerTypes`, `BackgroundPitchAlignment` types as Experimental. Initially they were exposed as stable by mistake. If you use them, please import `MapboxMaps` with `Experimental` SPI:
+```
+@_spi(Experimental) import MapboxMaps
+```
+
 * Localize geofencing attribution dialog.
 * Support dictionary expression literals.
 

Sources/MapboxMaps/ContentBuilders/MapContent/Puck3D.swift

@@ -48,6 +48,8 @@ public struct Puck3D: MapContent, PrimitiveMapContent {
     }
 
     /// Defines scaling mode. Only applies to location-indicator type layers. Defaults to ``ModelScaleMode/viewport``.
+    @_documentation(visibility: public)
+    @_spi(Experimental)
     public func modelScaleMode(_ modelScaleMode: ModelScaleMode) -> Puck3D {
         copyAssigned(self, \.configuration.modelScaleMode, .constant(modelScaleMode))
     }

Sources/MapboxMaps/Documentation.docc/API Catalogs/Layer Property Values.md

@@ -45,6 +45,9 @@
 - ``BackgroundPitchAlignment``
 - ``FillExtrusionBaseAlignment``
 - ``FillExtrusionHeightAlignment``
+- ``FillElevationReference``
+- ``LineElevationReference``
+- ``LineWidthUnit``
 
 <!-- Next two are arguable regarding it's category -->
 - ``ImageContent``