`whereDay` and `whereMonth` inconsistent when passing `int` values

[oliversarfas]

• Laravel Version: 5.8.11
• PHP Version: 7.3.2
• Database Driver & Version: MySQL 5.7.25

Description:

When using whereDay, or whereMonth, passing an integer produces mixed results based on the current date

Steps To Reproduce:

add a whereDay, or whereMonth to a builder instance, when the date is less than 10th of the month, or the month is less than 10.

[oliversarfas]

#28185 PR created

[driesvints]

Which database types do these columns have?