fix: resolve DoStmt LANGUAGE clause ordering for arrays test

- Fix DoStmt method to output LANGUAGE clause after code block instead of before
- Resolves original-upstream-arrays.test.ts AST mismatch (DO 3105 ... 3105 LANGUAGE syntax)
- All 363 arrays fixtures now pass with zero AST mismatches

Co-Authored-By: Dan Lynch <[email protected]>

Author: pyramation

packages/deparser/src/deparser.ts

@@ -6501,12 +6501,12 @@ export class Deparser implements DeparserVisitor {
         }
       }
 
-      if (languageArg) {
-        output.push(languageArg);
-      }
       if (codeArg) {
         output.push(codeArg);
       }
+      if (languageArg) {
+        output.push(languageArg);
+      }
     }
 
     return output.join(' ');