Unified Context Menu for Branch Elements

🔄 Improvements

• Improved context menu structure with inline grouped sections for branches, icons, images, notes, hyperlinks, and drawings
• Right-click actions for icons, images, and drawings now open inside the main branch context menu for a more consistent workflow
• Simplified context menu layout by removing the redundant top “Branch” section title
• Improved navigation between related branch actions with automatically expanded relevant sections

Example: Branch context menu

Example: Image context menu

And other improvements