Loading infinite when no sub categories exist.

[prathamVaidya]

Issue

Issue is depended on PR #2

When a category has 0 sub categories that loading does not stop even after server's response.

This logic is not enough to decide Loading Component should be rendered or not.
Fails when isExpanded is true and category has 0 sub categories.

impact-search/src/components/CategoryTree.tsx

Line 104 in a3cd7c1

return isExpanded && element.children.length === 0 ? (

Possible Solutions

1. Creating a loading list state that contains categories id of category that are loading.
2. Using redux or useReducer for creating action based state for main tree data structure and adding loading state in every category node.