Inaccurate breakpoint max-width when using rem values

[fiadone]

UnoCSS version

v0.51.8

Describe the bug

When we customize the theme's breakpoints via config by using rem-based values, the calcMaxWidthBySize utility provided by the preset-mini uses a subtraction coefficient of 0.1 which produces an inaccurate value in the resultant media queries, since it should be 1/16 instead (or, more generally, 1/rem-context-size).

Reproduction

https://uno.antfu.me/play/?html=DwEwlgbgBAFgjFAZgGwKYA8oCsCuBnAFzEQE8BaAY1QDsDUAnKMOgWz0prsYHMBDABzIAmKMBYgAXCgyUA9sgB8AKCijw0QXAAsUAEaz6IBnoNH6ZeqhAB6AMwAGKAuDX1y1aEhRNO-YeMUyLx4eAC8AER%2BZhZWdvbhzq6Q7mpePnrcZLrIOKjWQkKJbiqpGmTaUIHBYZGZ2bn5QgkuxS3JQA&config=JYWwDg9gTgLgBAbzgEwKYDNgDtUGEJaYDmcAvnOlBCHAOQCuWEAxgM6u0BQnqAHpLBQYAhvQA28NJhz5CwIgAoEnOHBgALVCFQAuRCtVwARlFTCA1pGwxWe5YcMhke2gBYAHKZC0ANAYdiRC4AbK5evv6GvGIu7gAM4ZGkBsmkAJRAA&css=Q&options=N4IgzgLgTglgxhEAuaBXApgXyA

System Info

No response

Validations

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• The provided reproduction is a minimal reproducible example of the bug.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.