-date-picker error when switching from (type='Month') to (type='Date') and month range is selected and range is true

[morteza-mortezai]

Environment
Vuetify Version: 2.5.12
Vue Version: 2.6.13
Browsers: Chrome 95.0.4638.69
OS: Windows 10

Steps to reproduce
switch select to "Month" mode .
select two month range ( for exmpl : september and oktober) from dete-picker provided
3.switch select to "date" mode
Expected Behavior
without error

Actual Behavior
error

Reproduction Link
https://github.com/morteza-mortezai/bug

Other comments
it shows error