[ios, macos] Added missing mapViewDidBecomeIdle for iOS. Fixed typo.

platform/ios/src/MGLMapView.mm

@@ -5988,6 +5988,16 @@ - (void)mapViewDidFinishRenderingMapFullyRendered:(BOOL)fullyRendered {
     }
 }
 
+- (void)mapViewDidBecomeIdle {
+    if (!_mbglMap) {
+        return;
+    }
+
+    if ([self.delegate respondsToSelector:@selector(mapViewDidBecomeIdle:)]) {
+        [self.delegate mapViewDidBecomeIdle:self];
+    }
+}
+
 - (void)didFinishLoadingStyle {
     if (!_mbglMap)
     {
@@ -6546,6 +6556,10 @@ void onDidFinishRenderingMap(mbgl::MapObserver::RenderMode mode) override {
         [nativeView mapViewDidFinishRenderingMapFullyRendered:fullyRendered];
     }
 
+    void onDidBecomeIdle() override {
+        [nativeView mapViewDidBecomeIdle];
+    }
+
     void onDidFinishLoadingStyle() override {
         [nativeView didFinishLoadingStyle];
     }

platform/macos/src/MGLMapView.mm

@@ -939,7 +939,7 @@ - (void)mapViewDidBecomeIdle {
         return;
     }
 
-    if ([self.delegate respondsToSelector:@selector(mapViewDidBecomeIdle)]) {
+    if ([self.delegate respondsToSelector:@selector(mapViewDidBecomeIdle:)]) {
         [self.delegate mapViewDidBecomeIdle:self];
     }
 }