feat: add emergency withdrawal flow

[kfastov]

• Add an owner-only emergency withdrawal flow that checks the token pause state via the TokenManagement component,
  transfers the full balance, and emits an EmergencyWithdrawal event.
• Wrap the component’s pause/unpause inside pause_protocol_token / unpause_protocol_token so external callers use the
  existing pause machinery and events.
• Extend the integration suite with success/negative cases around the emergency exit (balance assertions + event spy).

[kfastov]

@Pvsaint Hi! I’m trying to understand where the “pause state” for this function should come from. On one hand, we have self.paused_functions, but it isn’t referenced anywhere else in the contract and I’m not sure which function key it should use. On the other hand, the components (e.g. token_management_component) expose pause()/unpause(), but those aren’t callable from the main contract today, because the component isn’t embedded nor are its methods forwarded.

I temporarily forwarded the methods, but that solution feels hacky. Could you clarify what the intended flow is supposed to be?