* Enhanced retrieval of suggestion lists from libzim.
* Implemented task cancellation if the fragment is not visible.
* Refactored getVisibleResults into a suspend method to ensure efficient job cancellation.
* Handled exceptions thrown by coroutines.
* Transitioned to Kotlin Flow instead of Flowable after making getVisibleResults suspend.
* Employed lifecycleScope for coroutine launch to prevent unnecessary calls when the fragment is hidden.

…s cancelled before requesting suggestion results from libzim.

* Enhanced the loadMoreSearchResults method to accommodate this modification.
* Refined the render method to effectively cancel any previously running tasks upon its subsequent execution.

…concurrency issues.

* Applied mutex locking in the SearchState class to ensure safe access to search results when users search for different terms.

…rly.

* Testing the render method with different scenarios to ensure that libzim do not crash due to broken call stack.