Enable Advanced Filtering on Audit Type Register (Type, Area, Class, Audit)

Current behaviour:

• The Audit Type Register has no filter functionality other than a generic free-text search box.

Required changes:

1. Implement structured filters on the Audit Type Register, modeled after the Audit Schedule filters.

   • Filters to add: Audit Type Name, Audit Area, Class, Audit.

   • Each filter should be a multi-select checkbox list.

   • Include “Select all” and “Clear all” actions within each filter.

   • For long lists, add type-ahead search and consider virtualised lists.

2. Persist filter selections across visits.

   • On returning to the Audit Type Register, previously selected filters should auto-apply.

   • Persistence should survive page reloads and normal navigation.

   • Provide a visible “Reset to default” to clear persisted filters.

Filtering logic:

• Within a single filter: OR (any selected value matches).

• Across different filters: AND (records must satisfy all selected filter groups).

• Confirm this logic matches Audit Schedule behaviour for consistency.

Acceptance criteria:

• The Audit Type Register displays filter controls for Audit Type Name, Audit Area, Class.

• Users can select multiple values per filter via checkboxes.

• Results update correctly according to OR-within/AND-across logic.

• Selections persist after reload and navigation; “Clear all” resets current selections; “Reset to default” clears persisted state.

Notes:

• Define default state when no persisted filters exist (e.g., no filters applied).

• Ensure parity with Audit Schedule components to maximize reuse and consistency.