Add filename patterns for jsconfig.json (#103360)

Add alternative filename patterns for jsconfig.json that will be recognized as JSONC when opened. This mirrors the accepted filename patterns for tsconfig.json.

extensions/typescript-basics/package.json

@@ -45,7 +45,9 @@
         ],
         "filenamePatterns": [
           "tsconfig.*.json",
-          "tsconfig-*.json"
+          "jsconfig.*.json",
+          "tsconfig-*.json",
+          "jsconfig-*.json"
         ]
       }
     ],