Nested markdown preformatted blocks are not handled in chat rendering

[maximelebastard]

Before submitting your bug report

• I believe this is a bug. I'll try to join the Continue Discord for questions
• I'm not able to find an open issue that reports the same bug
• I've seen the troubleshooting guide on the Continue Docs

Relevant environment info

- OS: macOS
- Continue version: 1.1.32
- IDE version: 1.100.2
- Model: any
- config: 
  
%YAML 1.1
---
version: 1.0.16
schema: v1

bedrock: &bedrock
  provider: bedrock
  env:
    region: eu-central-1
    profile: bedrock

models:
  - name: (aws) Anthropic Claude 3.5 Sonnet
    <<: *bedrock
    model: anthropic.claude-3-5-sonnet-20240620-v1:0
    roles:
      - chat
      - edit
      - apply
  - name: (aws) Anthropic Claude 3.7 Sonnet
    <<: *bedrock
    model: eu.anthropic.claude-3-7-sonnet-20250219-v1:0
    roles:
      - chat
      - edit
  - name: (aws) Anthropic Claude 3 Haiku
    <<: *bedrock
    model: anthropic.claude-3-haiku-20240307-v1:0
    roles:
      - chat
      - autocomplete

  - name: (aws) Cohere Rerank
    <<: *bedrock
    model: cohere.rerank-v3-5:0
    roles:
      - rerank

  - name: (aws) Cohere Embed Multilingual
    <<: *bedrock
    model: cohere.embed-multilingual-v3
    roles:
      - embed
      
  - name: (local) Qwen 2.5 autocomplete
    provider: ollama
    model: qwen2.5-coder:3b
    roles:
      - chat

context:
  - provider: file
  - provider: code
  - provider: open
  - provider: folder
  - provider: clipboard
  - provider: diff
  - provider: terminal
  - provider: docs
  - provider: web
    params:
      n: 5
  - provider: codebase
  - provider: tree
  - provider: url

prompts:
  - name: commit
    description: Create a commit message from staged files
    prompt: "{{input}}"

docs:
  - name: Symfony
    startUrl: https://symfony.com/doc/6.4/index.html

defaultCompletionOptions:
  maxTokens: 4096

raw output: see attached (looks like github does not like a lot nested markdown neither)

rawoutput.md

Description

For some complex questions (ie: terraform or documentation), having a preformatted markdown block into another preformatted markdown block makes the rendering of the chat weird. See above

To reproduce

1. Ask any question implying having nested preformatted blocks. For the public demo, mine was "Show me nested markdown blocks with nested preformatted blocks" but we experienced it asking to generate README.md files that imply nested terraform commands
2. The chat does not handle nested preformatted blocks and exits the preformatting rendering too early

Log output