Remove empty or falsy parameters from URL hash in handleHashChange()

[coderabbitai]

Summary

There is a TODO comment in src/components/AppController.tsx indicating that we still need to remove empty or falsy parameters from the URL hash after processing it in handleHashChange().

Location

src/components/AppController.tsx around line 127:

// TODO: Remove empty or falsy parameters.

Acceptance Criteria

• After parsing the URL hash, the application should remove any parameters whose values are empty string, null, undefined, or otherwise falsy.
• The URL should be updated via updateWindowUrlHashParams without these parameters.
• Unit tests should be added to cover the new behaviour.

Links

PR: #314
Comment: #314 (comment)
Requested by: @junhaoliao

[Henry8192]

fixed in #351.