Figure out why problem folders not modified in a pull request are tested too in the matrix run

[arunsathiya]

https://github.com/arunsathiya/leetcode/actions/runs/7907301305

I expected only problem 206 to run in the matrix tests, but 143 and and 19 ran too. Need to figure out why. Perhaps because the previous runs had failed?

• https://github.com/arunsathiya/leetcode/actions/runs/7892903397
• https://github.com/arunsathiya/leetcode/actions/runs/7896490352