fix(ios): remove percent-encoding of cookie values in CapacitorCookies

[michaelwolz]

Remove the percent-encoding of cookie values in CapacitorCookies plugin implementation on iOS and therefore make it behave the same as on Android.

Fixes: https://github.com/ionic-team/capacitor/issues/8248

Working example can be found here (build locally with non published packages): https://github.com/michaelwolz/capacitor-cookies/tree/working-version

Screenshot