feat(landing): track label button clicks BM-1066 (#3335)

### Motivation

It would be nice to know how people are asking for layers to be rendered
with labels enabled

### Modifications

Track users clicking on labels
Track styleJsons being created with labels enabled

### Verification

Will check google analytics after deployed.

packages/lambda-tiler/src/routes/tile.style.json.ts

@@ -280,6 +280,8 @@ export async function styleJsonGet(req: LambdaHttpRequest<StyleGet>): Promise<La
   const dbId = config.Style.id(styleName);
   const styleConfig = await config.Style.get(dbId);
 
+  req.set('styleConfig', { terrain, labels });
+
   if (styleConfig == null) {
     // Were we given a tileset name instead, generated
     const tileSet = await config.TileSet.get(config.TileSet.id(styleName));

packages/landing/src/components/map.label.tsx

@@ -1,6 +1,6 @@
 import { IControl } from 'maplibre-gl';
 
-import { Config } from '../config.js';
+import { Config, GaEvent, gaEvent } from '../config.js';
 
 const LabelsDisabledLayers = new Set(['topographic', 'topolite']);
 
@@ -42,7 +42,9 @@ export class MapLabelControl implements IControl {
   }
 
   toggleLabels = (): void => {
-    Config.map.setLabels(!Config.map.labels);
+    const labelState = !Config.map.labels;
+    gaEvent(GaEvent.Ui, `labels:${labelState}`);
+    Config.map.setLabels(labelState);
   };
 
   updateLabelIcon = (): void => {