Onboarding: Local Network confirmation matches other pages

Granted label now reads just 'Connected' with the green tick and uses
the same .subheadline confirmation styling as the Location and
Notifications pages.

FuelBoard/OnboardingView.swift

@@ -229,8 +229,10 @@ struct OnboardingView: View {
                     .foregroundStyle(.secondary)
             }
         } else if prompter.dataGranted {
-            Label("Connected — prices will load", systemImage: "checkmark.circle.fill")
+            // Same confirmation styling as the Location/Notifications pages.
+            Label("Connected", systemImage: "checkmark.circle.fill")
                 .foregroundStyle(.green)
+                .font(.subheadline)
         } else if prompter.dataDenied {
             Text("Local network access was denied — prices won't load until it's allowed, but you can keep using FuelBoard.")
                 .font(.footnote)