dont allow scrolling when last line is visible

[nnyyxxxx]

watch the video

Type of Change

• [x] New feature
• [x] Refactoring

for the color bleeding u see in the video and image its solved with this PR #723

Description

before:

after:

https://github.com/user-attachments/assets/49922891-1771-489e-ae8d-ed5dda91dc6d