Optimize rendering of dynamic messages in render_message.py

[kooroshkz]

Describe the changes you have made:

Optimized code by replacing explicit loops with list comprehensions for efficiency. Utilized generator expressions to reduce memory overhead during output process. ( Instead of a list of outputs and then joining them using "\n".join(), the new code uses a generator expression which reduce memory consumption, particularly when dealing with large messages and outputs. )

Pre-Submission Checklist (optional but appreciated):

• [ ] ( Not needed and field for it ) I have included relevant documentation updates (stored in /docs)
• [x] I have read docs/CONTRIBUTING.md
• [x] I have read docs/ROADMAP.md

OS Tests (optional but appreciated):

• [x] Tested on Windows
• [x] Tested on MacOS
• [x] Tested on Linux

[KillianLucas]

Nice, love to see performance optimizations. Great code @kooroshkz. Merged!