Validate if the breakpoints are different

MR with the fix implemented: https://git.drupalcode.org/project/ebt_core/-/merge_requests/32

P.S. This MR depends of 🐛 Breakpoints values for mobile, tablet and desktop are accepting equal values Fixed because in the previous issue we created the formValidate method, and on this issue we're adding a new validation on this same method

Thank you so much

Hi RenatoG, thank you!