macOS: grab text field focus of command palette after tick (#8591)

Fixes #8497

This works on every other supported version of macOS but doesn't work on
macOS tahoe. Putting it on the next event loop tick works at least on
Sequoia and Tahoe so let's just do that.

macos/Sources/Features/Command Palette/CommandPalette.swift

@@ -165,7 +165,12 @@ fileprivate struct CommandPaletteQuery: View {
                 .textFieldStyle(.plain)
                 .focused($isTextFieldFocused)
                 .onAppear {
-                    isTextFieldFocused = true
+                    // We want to grab focus on appearance. We have to do this after a tick
+                    // on macOS Tahoe otherwise this doesn't work. See:
+                    // https://github.com/ghostty-org/ghostty/issues/8497
+                    DispatchQueue.main.async {
+                        isTextFieldFocused = true
+                    }
                 }
                 .onChange(of: isTextFieldFocused) { focused in
                     if !focused {