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

compound-ios/Sources/Compound/Colors/CompoundColors.swift

@@ -42,7 +42,7 @@ public class CompoundColors {
     
     /// Customise the colour at the specified key path with the supplied colour.
     /// Supplying `nil` as the colour will remove any existing customisation.
-    @MainActor public func override(_ keyPath: KeyPath<CompoundColorTokens, Color>, with color: Color?) {
+    public func override(_ keyPath: KeyPath<CompoundColorTokens, Color>, with color: Color?) {
         overrides[keyPath] = color
     }
     

compound-ios/Sources/Compound/Colors/CompoundUIColors.swift

@@ -15,10 +15,12 @@ public extension UIColor {
 }
 
 /// The colours used by Element as defined in Compound Design Tokens.
-/// This struct contains only the colour tokens in a more usable form.
+/// This class contains only the colour tokens in a more usable form.
+/// Since this can be used by attributed strings which may run in non isolated concurrent contexts,
+/// The object needs to be nonisolated.
 @Observable
 @dynamicMemberLookup
-public class CompoundUIColors {
+public final nonisolated class CompoundUIColors {
     /// The base colour tokens that form the palette of available colours.
     ///
     /// Normally these shouldn't be necessary, however in practice we may need
@@ -35,7 +37,7 @@ public class CompoundUIColors {
     
     /// Customise the colour at the specified key path with the supplied colour.
     /// Supplying `nil` as the colour will remove any existing customisation.
-    @MainActor public func override(_ keyPath: KeyPath<CompoundUIColorTokens, UIColor>, with color: UIColor?) {
+    public func override(_ keyPath: KeyPath<CompoundUIColorTokens, UIColor>, with color: UIColor?) {
         overrides[keyPath] = color
     }
     
@@ -44,7 +46,10 @@ public class CompoundUIColors {
     // swiftformat:disable numberFormatting
     /// This token is a placeholder and hasn't been finalised.
     @available(iOS, deprecated: 100000.0, message: "This token should be generated by now.")
-    public let _bgCodeBlock = coreTokens.gray100
+    public var _bgCodeBlock: UIColor {
+        CompoundUIColors.coreTokens.gray100
+    }
+
     /// This token is a placeholder and hasn't been finalised.
     @available(iOS, deprecated: 100000.0, message: "This token should be generated by now.")
     public let _bgSubtleSecondaryAlpha = coreTokens.alphaGray300

compound-ios/Sources/Compound/Text Field Styles/SearchFieldStyle.swift

@@ -11,7 +11,6 @@ import SwiftUIIntrospect
 public extension View {
     /// Styles a search bar text field using the Compound design tokens.
     /// This modifier is to be used in combination with `.searchable`.
-    @MainActor
     func compoundSearchField() -> some View {
         introspect(.navigationStack, on: .supportedVersions, scope: .ancestor) { navigationController in
             // Uses the navigation stack as .searchField is unreliable when pushing the second search bar, during the create rooms flow.