macos: apply window position after setting content size

When window-width/height is configured, the window size is set via
setContentSize in windowDidLoad. However, window-position-x/y was not
being applied after this resize, causing the window to appear at an
incorrect position.

This was a regression introduced in c75bade89 which refactored the
default size logic from a computed NSRect property to a DefaultSize
enum. The original code called adjustForWindowPosition after calculating
the frame, but this was lost during the refactoring.

Fixes the issue by calling adjustForWindowPosition after applying
contentIntrinsicSize to ensure window position is correctly set.

macos/Sources/Features/Terminal/TerminalController.swift

@@ -952,9 +952,13 @@ class TerminalController: BaseTerminalController, TabGroupCloseCoordinator.Contr
             case .contentIntrinsicSize:
                 // Content intrinsic size requires a short delay so that AppKit
                 // can layout our SwiftUI views.
-                DispatchQueue.main.asyncAfter(deadline: .now() + .microseconds(10_000)) { [weak window] in
-                    guard let window else { return }
+                DispatchQueue.main.asyncAfter(deadline: .now() + .microseconds(10_000)) { [weak self, weak window] in
+                    guard let self, let window else { return }
                     defaultSize.apply(to: window)
+                    if let screen = window.screen ?? NSScreen.main {
+                        let frame = self.adjustForWindowPosition(frame: window.frame, on: screen)
+                        window.setFrameOrigin(frame.origin)
+                    }
                 }
             }
         }