refactor(@schematics/angular): use the new X link

Author: bampakoa

packages/schematics/angular/application/files/common-files/src/app/app__suffix__.html.template

@@ -286,8 +286,8 @@
           </svg>
         </a>
         <a
-          href="https://twitter.com/angular"
-          aria-label="Twitter"
+          href="https://x.com/angular"
+          aria-label="X"
           target="_blank"
           rel="noopener"
         >
@@ -297,7 +297,7 @@
             viewBox="0 0 24 24"
             fill="none"
             xmlns="http://www.w3.org/2000/svg"
-            alt="Twitter"
+            alt="X"
           >
             <path
               d="M18.244 2.25h3.308l-7.227 8.26 8.502 11.24H16.17l-5.214-6.817L4.99 21.75H1.68l7.73-8.835L1.254 2.25H8.08l4.713 6.231zm-1.161 17.52h1.833L7.084 4.126H5.117z"