Compound - Swift 6.2 and Main actor isolation (#5109)

* compound is now using 6.2 and main actor isolation + some tweaks to make it build tests and EX

* better handling of the nonisolated context for CompoundUIColors

* improving docs

* fix comment

* remove unused Sendable conformance

ElementX/Sources/Other/SwiftUI/Styles/ElementTextFieldStyle.swift

@@ -10,6 +10,7 @@ import Compound
 import SwiftUI
 import SwiftUIIntrospect
 
+@MainActor
 extension TextFieldStyle where Self == ElementTextFieldStyle {
     static func element(labelText: String? = nil,
                         footerText: String? = nil,
@@ -34,6 +35,7 @@ extension TextFieldStyle where Self == ElementTextFieldStyle {
 }
 
 /// The text field style used in authentication screens.
+@MainActor
 struct ElementTextFieldStyle: @MainActor TextFieldStyle {
     enum State {
         case success