FEAT: Add collapse and defaultCollapse props to MultiList and SingleList

[Talha12Shiekh]

Proposed Changes

Adds built-in collapse/expand functionality to the inline list components (MultiList and SingleList) to resolve the feature request:

1. collapse (Boolean prop, default: false): When set to true, enables collapsible panels for the filter. The title header is converted to an interactive toggle button with focus and keyboard support.
2. defaultCollapse (Boolean prop, default: true): Determines the initial state of the collapsible filter when collapse is enabled.
3. Keyboard & Toggle Interaction: Clicking the title or focusing and pressing Enter/Space toggles the visibility of the search input, list options, and load-more controls.
4. Visual Indicator: Renders a clean arrow indicator (▼ / ▲) next to the title to represent open/closed states.
5. A11y Compliance: The toggle header correctly uses role="button", tabIndex={0}, and dynamic aria-expanded attributes.
6. Types & Component Contracts: Updated MultiList.d.ts and SingleList.d.ts definitions.

Linked Issues

• Fixes Add a collapse behavior on the filter #1470 ([Feature Request] collapse filters option in MultiList / SingleList)

Usage Example:

// Render as collapsed by default
<MultiList
  componentId="CategorySensor"
  dataField="category.keyword"
  title="Categories"
  collapse={true}
/>

// Render as expanded by default
<SingleList
  componentId="BrandSensor"
  dataField="brand.keyword"
  title="Brands"
  collapse={true}
  defaultCollapse={false}
/>

Checklist

• Describe the proposed changes and how it'll improve the library experience.
• Please make sure that there are no linting errors in the code.
• Add a demo video/gif/screenshot to explain how did you test the fix.
• If it is a global change, try to add any side effects that it could have.
• Create a PR to add/update the docs (if needed) at here.
• Create a PR to add/update the storybook (if needed) at here.

Improvements to the Library Experience

• UI Flexibility: Fulfills feature request Add a collapse behavior on the filter #1470 by allowing developers to implement compact, collapsible sidebar filters natively without requiring bootstrap wrappers or complex custom components.

Side Effects

• None. Default behavior remains unchanged (collapse defaults to false).

Testing

• Built successfully using Babel (yarn build) without compilation or runtime syntax errors.