fix(bun): correct Bun version check and improve upgrade feedback

the Bun installation helper script by fixing the Bun version check, removing unused code, and improving developer feedback when Bun is already up to date.

Author: Mohataseem89

packages/bun/scripts/install-bun.js

@@ -10,12 +10,11 @@ const https = require('https');
 const installScriptUrl = 'https://bun.sh/install';
 
 // Check if bun is installed
-exec('bun -version', (error, version) => {
+exec('bun --version', (error, version) => {
   if (error) {
     console.error('bun is not installed. Installing...');
     installLatestBun();
   } else {
-    const versionBefore = version.trim();
 
     exec('bun upgrade', (error, stdout, stderr) => {
       if (error) {
@@ -26,6 +25,7 @@ exec('bun -version', (error, version) => {
       const out = [stdout, stderr].join('\n');
 
       if (out.includes("You're already on the latest version of Bun")) {
+        console.log('Bun is already up to date.');
         return;
       }