fix(pairing): show actual code in approval command instead of placeholder (#13723)

* fix(pairing): show actual code in approval command instead of placeholder

The pairing reply shown to new users included the approval command with
a literal '<code>' placeholder. Users had to manually copy the code
from one line and substitute it into the command.

Now shows the ready-to-copy command with the real pairing code:

Before: openclaw pairing approve telegram <code>
After:  openclaw pairing approve telegram abc123

Fixed in both the shared pairing message builder and the Telegram
inline pairing reply.

* test(pairing): update test to expect actual code instead of placeholder

---------

Co-authored-by: Echo Ito <echoito@MacBook-Air.local>

src/telegram/bot-message-context.ts

@@ -289,7 +289,7 @@ export const buildTelegramMessageContext = async ({
                       `Pairing code: ${code}`,
                       "",
                       "Ask the bot owner to approve with:",
-                      formatCliCommand("openclaw pairing approve telegram <code>"),
+                      formatCliCommand(`openclaw pairing approve telegram ${code}`),
                     ].join("\n"),
                   ),
               });