Apply function has issues with Mermaid graph

[boan-anbo]

In composer mode, when the model tries to write to a Markdown to insert a Mermaid graph, it fails to do so and can only output it in the chat box like so:

mermaid graph LR A[Client] --> B[Commands] A --> C[Queries] B --> D[Command Handler] C --> E[Query Handler] D --> F[Project Aggregate] F --> G[Event Store] E --> H[Read Model] G --> I[Event Handler] I --> H