Invisible date picker icon for datetime-local fields

[zorn-v]

Describe the bug
After updating from 4.13 to latest version some users started complain about disappeared date picker icon.
Probably because of this commit d82326c
Actually it not disappeared, but become white (white on white) and I have only light color scheme in my project.

To Reproduce
Add some datetime field to form with disabled dark mode (->disableDarkMode() in configureDashboard).
Then enable dark theme in browser (I checked in windows edge, but other chrome based should work also I think).

Additional context
->setDefaultColorScheme('light') in configureDashboard does not resolve the issue.
I just add color-scheme: light; to :root in my "custom css"