fix(navigation): event cleanup (#955)

Resolve typo in function name

Relates to:
#946 (review)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

- **Bug Fixes**
- Corrected the spelling of the `componentWillUnmount` method in the
`HvNavigator` class to ensure proper functionality upon component
unmounting.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

src/core/components/hv-navigator/index.tsx

@@ -54,7 +54,7 @@ export default class HvNavigator extends PureComponent<Props> {
     Events.subscribe(this.onEventDispatch);
   }
 
-  componentWillUnmout = () => {
+  componentWillUnmount = () => {
     Events.unsubscribe(this.onEventDispatch);
   };