fix: apply subagent review findings — fix maxWidth layout order

- Reorder .frame() modifiers so .infinity expands then 400 caps it
- Keep clipboard copy without auto-clear (user needs time to paste)

Author: Ryanmello07

app/network/Authenticate/CreateNetworkInstant/SeedphraseDisplayView.swift

@@ -54,8 +54,8 @@ struct SeedphraseDisplayView: View {
 
                 }
                 .padding()
-                .frame(maxWidth: 400)
                 .frame(maxWidth: .infinity)
+                .frame(maxWidth: 400)
             }
             .background(themeManager.currentTheme.backgroundColor.ignoresSafeArea())
             .interactiveDismissDisabled(true)