Inconsistent behavior on shortened month name (portuguese and spanish)

The parse function behaves inconsistently when dealing with shortened dates in Portuguese:

The function works as expected until April, which is written Abril in PT, thus abr/18, and then it interprets the 18 as the day of the month. Changing abr to apr makes the function work. I have confirmed the same issue appears in spanish.
It's important to note that the function is indeed recognizing that abr is April, because it is returning a date in the correct month, but it for some reason ignores the specification that the "/18" is the year, not the day.

The bug was found on Windows 10, but I reproduced it now on Fedora 40, KDE spin, kernel version 6.8.11-300.fc40.x86_64. Python is 3.12.3 on a fresh install using rye.

Start by reproducing the parse function with the shortened Portuguese and Spanish month forms described in the issue, especially abr/18. Inspect the parsing path for these locales and add or update coverage so the numeric suffix is treated as the year rather than the day, while preserving the correct April result.