LibJS: Add indentation to sections in SwitchCase::dump()

This now matches the output of

Program
  (Variables)
    ...
  (Children)
    ...

or

FunctionDeclaration 'foo'
  (Parameters)
    ...
  (Body)
    ...

etc.

Also don't print each consequent statement index, it doesn't add any
value.

Libraries/LibJS/AST.cpp

@@ -1384,21 +1384,17 @@ void SwitchStatement::dump(int indent) const
 void SwitchCase::dump(int indent) const
 {
     ASTNode::dump(indent);
-    print_indent(indent);
+    print_indent(indent + 1);
     if (m_test) {
         printf("(Test)\n");
-        m_test->dump(indent + 1);
+        m_test->dump(indent + 2);
     } else {
         printf("(Default)\n");
     }
-    print_indent(indent);
+    print_indent(indent + 1);
     printf("(Consequent)\n");
-    int i = 0;
-    for (auto& statement : m_consequent) {
-        print_indent(indent);
-        printf("[%d]\n", i++);
-        statement.dump(indent + 1);
-    }
+    for (auto& statement : m_consequent)
+        statement.dump(indent + 2);
 }
 
 Value ConditionalExpression::execute(Interpreter& interpreter) const