[java] fix test when formatting disabled: formatting enabled forcefully

GitOrigin-RevId: 7057f002ab5c6125d0051e72ea1d01f051203732

java/java-tests/testData/refactoring/changeSignature/MultilineJavadocWithoutFormatting_after.java

@@ -1,12 +1,10 @@
 class A {
   /**
    * Demo.
-   *  @param b
-   * b.
-   * @param a
-   * a.
-   * @param c
-   * c.
+   *
+   * @param b b.
+   * @param a a.
+   * @param c c.
    */
   public void demo(int b, int a, int c) {
   }