Mem-Client: Styled Exports Start With Styled

Styled wrapper naming rule.

Scope:
- Applies to style files under `domains/frontend/mem-client/src/mds/components/**/*.style.tsx`.

Trigger:
- Added exported styled wrapper declarations (`export const ... = styled...`).

Hard requirements:
1) Exported styled wrapper names must start with `Styled`.

Decision:
- Return NOT APPROVED when trigger is met and exported styled wrappers do not use the `Styled*` prefix.