Incorrect Leap Year Calculation for 1403 in Jalali Calendar

[baravak]

Description

The library incorrectly calculates the year 1403 in the Jalali calendar as a non-leap year. According to the Jalali calendar rules, 1403 should be a leap year because the difference between its year and the previous leap year (1399) is 4 years.

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Steps to Reproduce

1. Use the library to check if 1403 is a leap year.
2. The library incorrectly returns false, indicating that 1403 is not a leap year.