maybe part of letting scui dictate size?

Author: MiaKoring

Sources/SwiftCrossUI/Backend/AppBackend.swift

@@ -612,6 +612,7 @@ public protocol AppBackend: Sendable {
     /// Updates the content and appearance of a sheet.
     func updateSheet(
         _ sheet: Sheet,
+        proposedSize: SIMD2<Int>,
         onDismiss: @escaping () -> Void
     )
 
@@ -1266,6 +1267,7 @@ extension AppBackend {
 
     public func updateSheet(
         _ sheet: Sheet,
+        proposedSize: SIMD2<Int>,
         onDismiss: @escaping () -> Void
     ) {
         todo()

Sources/SwiftCrossUI/Views/Modifiers/SheetModifier.swift

@@ -91,13 +91,14 @@ struct SheetModifier<Content: View, SheetContent: View>: TypeSafeView {
 
             let _ = children.sheetContentNode.update(
                 with: sheetContent(),
-                proposedSize: backend.sizeOf(sheet),
+                proposedSize: dryRunResult.size.idealSize,
                 environment: sheetEnvironment,
                 dryRun: false
             )
 
             backend.updateSheet(
                 sheet,
+                proposedSize: dryRunResult.size.idealSize,
                 onDismiss: handleDismiss
             )