Disable dark mode on iOS app while still being able to get prefers-color-scheme from WKWebView

Question

I'm using the newest version on Xcode for my iOS app.

I don't want iOS to automatically change the colors in my app when device is in dark mode, because it doesn't look good and also isn't necessary.

Therefore, I added the following in the Info.plist file:

<key>UIUserInterfaceStyle</key>
<string>Light</string>

This will always keep the app in light mode, no matter if user has turned on the dark mode or not.

I also have a WKWebView in my app. I want to be able to detect if the dark mode is turned on to provide the appropriate CSS. This is possible with the following CSS code:

<style>
@media (prefers-color-scheme: dark) {
    body    {
        background-color: black;
    }
}
</style>

In this case, the html's body will be black, but only if the iOS device is in dark mode.

BUT: This CSS snippet doesn't work if I force light mode for my app in Info.plist with UIUserInterfaceStyle.

So, either I remove UIUserInterfaceStyle from Info.plist file or I won't be able to detect dark mode via CSS in WKWebView.

Or, is there a way to prevent iOS to automatically adjust colors in dark mode while I'm still able to detect via CSS loaded in the WKWebView if dark mode is enabled?