DevStory | Create custom Html sanitizer for Markdown Output

### 📝 Task Description

Move away from `mganss/HtmlSanitizer` as it is quite bloated with features and dependencies we will not need. Better to have our own one that works directly on the Node Tree

### 🛠 Technical Details

_No response_

### 🔧 Dev-Side Criteria

_No response_

### 🔬 Testing Requirements

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### 📐 Application Section

🔗 API