Fix removeSource throwing TypeError in Terrain.update under globe projection

src/style/style.ts

@@ -4306,6 +4306,10 @@ class Style extends Evented<MapEvents> {
         this._force3DLayerUpdate();
         const parameters = this._getTransitionParameters({duration: 0});
         terrain.updateTransitions(parameters);
+        // Evaluate the terrain properties synchronously so that consumers such as
+        // Terrain#update can access them before the next Style#update runs (#13665).
+        const evaluationParameters = new EvaluationParameters(this.z || 0, {...parameters, worldview: this.map.getWorldview()});
+        terrain.recalculate(evaluationParameters);
     }
 
     _force3DLayerUpdate() {

test/unit/terrain/terrain.test.ts

@@ -163,6 +163,13 @@ describe('Elevation', () => {
         });
     });
 
+    test('mapbox-gl-js#13665: removeSource before the first render under globe projection does not throw', async () => {
+        const map = createMap({projection: 'globe'});
+        await waitFor(map, 'style.load');
+        map.addSource('repro-src', {type: 'geojson', data: {type: 'FeatureCollection', features: []}});
+        expect(() => map.removeSource('repro-src')).not.toThrowError();
+    });
+
     test('style diff=false removes dem source', async () => {
         const map = createMap();
         await waitFor(map, "style.load");