MUI X v6 does not get recognized correctly after build

[kac5a]

Describe the bug
Locally, when you start your app, the datetime selector works properly, it generates a "standard" variant date picker from MUI X, but if you build the project and start it, or deploy it, the datetime picker is an outlined picker, and after selecting a date, the app crashes.

To Reproduce

• Create a MUI query builder
• Create a datetime field
• Build the project
• Select a date

Additional context
I checked the code, and in the packages/mui/modules/widgets/value/MuiDateTime.jsx component, there is a check for isV6. That might be the problem. If I use the same component, and set that value to true, the component gets built properly.