Add test

Author: shulhi

tests/syntax_tests/data/printer/comments/expected/jsx.res.txt

@@ -65,6 +65,15 @@ module Cite = {
   React.string("Hello, World!")}
 </div>
 
+<div>
+  // Outside comment
+  {
+    // But this one is inside
+    let x = 1
+    let y = 2
+  }
+</div>
+
 let x =
   <>
     // before a

tests/syntax_tests/data/printer/comments/jsx.res

@@ -67,6 +67,14 @@ value=""
     React.string("Hello, World!")}
 </div>
 
+<div>
+  // Outside comment
+  {// But this one is inside
+    let x = 1
+    let y = 2
+  }
+</div>
+
 let x = <>
   // before a
   {a} // after a