Paywalls: improved FooterView scaling (#2948)

### Improvements:
- Added `bold` parameter, necessary for upcoming template
- Avoid scaling beyond largest dynamic type sizes
- Scale separator view with dynamic type setting to ensure consistency

RevenueCatUI/Data/Constants.swift

@@ -13,4 +13,7 @@ enum Constants {
     static let defaultAnimation: Animation = .easeIn(duration: 0.2)
     static let fastAnimation: Animation = .easeIn(duration: 0.1)
 
+    /// For UI elements that wouldn't make sense to keep scaling up forever
+    static let maximumDynamicTypeSize: DynamicTypeSize = .accessibility3
+
 }

RevenueCatUI/Views/FooterView.swift

@@ -13,8 +13,16 @@ struct FooterView: View {
 
     var configuration: PaywallData.Configuration
     var color: Color
+    var bold: Bool
     var purchaseHandler: PurchaseHandler
 
+    init(configuration: PaywallData.Configuration, color: Color, bold: Bool = true, purchaseHandler: PurchaseHandler) {
+        self.configuration = configuration
+        self.color = color
+        self.bold = bold
+        self.purchaseHandler = purchaseHandler
+    }
+
     var body: some View {
         HStack {
             if self.configuration.displayRestorePurchases {
@@ -42,22 +50,42 @@ struct FooterView: View {
             }
         }
         .foregroundColor(self.color)
-        .font(.caption.bold())
+        .font(Self.font.weight(self.fontWeight))
         .padding(.horizontal)
         .padding(.bottom, 5)
+        .dynamicTypeSize(...Constants.maximumDynamicTypeSize)
     }
 
     private var separator: some View {
-        Image(systemName: "circle.fill")
-            .font(.system(size: 5))
-            .accessibilityHidden(true)
+        SeparatorView(bold: self.bold)
     }
 
     private var hasTOS: Bool { self.configuration.termsOfServiceURL != nil }
     private var hasPrivacy: Bool { self.configuration.privacyURL != nil }
+    private var fontWeight: Font.Weight { self.bold ? .bold : .regular }
+
+    private static let font: Font = .caption
 
 }
 
+@available(iOS 16.0, macOS 13.0, tvOS 16.0, *)
+private struct SeparatorView: View {
+
+    var bold: Bool
+
+    var body: some View {
+        Image(systemName: "circle.fill")
+            .font(.system(size: self.bold ? self.boldSeparatorSize : self.separatorSize))
+            .accessibilityHidden(true)
+    }
+
+    @ScaledMetric(relativeTo: .caption)
+    private var separatorSize: CGFloat = 4
+
+    @ScaledMetric(relativeTo: .caption)
+    private var boldSeparatorSize: CGFloat = 5
+}
+
 @available(iOS 16.0, macOS 13.0, tvOS 16.0, *)
 private struct RestorePurchasesButton: View {
 
@@ -154,12 +182,21 @@ struct Footer_Previews: PreviewProvider {
             privacyURL: URL(string: "https://revenuecat.com/tos")!
         )
         .previewDisplayName("All")
+
+        Self.create(
+            displayRestorePurchases: true,
+            termsOfServiceURL: URL(string: "https://revenuecat.com/tos")!,
+            privacyURL: URL(string: "https://revenuecat.com/tos")!,
+            bold: false
+        )
+        .previewDisplayName("Not bold")
     }
 
     private static func create(
         displayRestorePurchases: Bool = true,
         termsOfServiceURL: URL? = nil,
-        privacyURL: URL? = nil
+        privacyURL: URL? = nil,
+        bold: Bool = true
     ) -> some View {
         FooterView(
             configuration: .init(
@@ -171,6 +208,7 @@ struct Footer_Previews: PreviewProvider {
                 privacyURL: privacyURL
             ),
             color: TestData.colors.text1Color,
+            bold: bold,
             purchaseHandler: PreviewHelpers.purchaseHandler
         )
     }

RevenueCatUI/Views/PurchaseButton.swift

@@ -53,11 +53,9 @@ struct PurchaseButton: View {
         .controlSize(self.mode.buttonSize)
         .buttonStyle(.borderedProminent)
         .frame(maxWidth: .infinity)
-        .dynamicTypeSize(...Self.maximumDynamicTypeSize)
+        .dynamicTypeSize(...Constants.maximumDynamicTypeSize)
     }
 
-    private static let maximumDynamicTypeSize: DynamicTypeSize = .accessibility3
-
 }
 
 @available(iOS 16.0, macOS 13.0, tvOS 16.0, *)