chore(web): use neutral title in post-checkout activation dialog (#1235)

Swap "Finalizing your purchase" for "Activating your license" so the
copy reads correctly for both paid checkouts and trial starts (the same
dialog drives both flows).

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: msukkari

packages/web/src/ee/features/lighthouse/licenseActivactionDialog.tsx

@@ -157,7 +157,7 @@ export function LicenseActivactionDialog({ userEmail }: CheckoutSuccessModalProp
                         <CheckCircle2 className="h-6 w-6 text-green-600 dark:text-green-400" />
                     </div>
                     <DialogTitle>
-                        {isPolling ? "Finalizing your purchase" : "One more step"}
+                        {isPolling ? "Activating your license" : "One more step"}
                     </DialogTitle>
                     <DialogDescription>
                         {isPolling