refactor: Refactor WebSocketService to use messenger exposed methods

[Mrtenz]

This refactors the WebSocketService to use the messenger exposed methods.

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Note

Medium Risk
Moderate risk because it changes how WebSocketService actions are registered/exposed on the messenger and makes previously private methods public, which could break callers relying on old action types or handler names.

Overview
Refactors WebSocketService to register messenger actions via registerMethodActionHandlers using an explicit MESSENGER_EXPOSED_METHODS list, replacing per-action registerActionHandler wiring.

Adds an auto-generated WebSocketService-method-action-types.ts file for strongly-typed method action definitions, updates WebSocketService to use these types, and adjusts exports in websocket/index.ts to export the service class plus selected types (instead of export *).

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
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Additional details and impacted files

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##             controller-refactors    #3917   +/-   ##
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  Files                           ?      425           
  Lines                           ?    12323           
  Branches                        ?     1935           
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  Hits                            ?    12146           
  Misses                          ?      177           
  Partials                        ?        0           

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[FrederikBolding]

Hmm, do we strictly need methods available publicly on the service class itself?

[Mrtenz]

Yes, since they are referenced in the generated types file.