Line Reader options appear disabled when they previously did not

[benvillalobos]

Relevant issue: https://github.com/microsoft/vscode-edu-extension/issues/1913 let me know if you need access to the repo.

The 3 line and 5 line options in Line Focus show as grey and unclickable in browser-sizes where they previously showed as enabled. See more detailed information in the link above.

Has the behavior here changed intentionally?