fix: comment break indentation of simple lambdas

Author: TimothyMakkison

Src/CSharpier.Core/CSharp/SyntaxPrinter/SyntaxNodePrinters/SimpleLambdaExpression.cs

@@ -14,7 +14,7 @@ public static Doc PrintHead(SimpleLambdaExpressionSyntax node, PrintingContext c
     {
         return Doc.Concat(
             Modifiers.PrintSorted(node.Modifiers, context),
-            Node.Print(node.Parameter, context),
+            Doc.Group(Node.Print(node.Parameter, context)),
             " ",
             Token.Print(node.ArrowToken, context)
         );

Src/CSharpier.Tests/FormattingTests/TestFiles/cs/SimpleLambdaExpressions.test

@@ -136,6 +136,30 @@ public class ClassName
             return x;
         });
 
+        this.Where___________________(
+            x // Comment
+            =>
+            {
+                return x;
+            }
+        );
+
+        this.Where___________________(
+            // Comment
+            x =>
+            {
+                return x;
+            }
+        );
+
+        this.Where___________________(
+            // Comment
+            () =>
+            {
+                return 1;
+            }
+        );
+
         this.Where______________________________________(
             superLongName________________________________ =>
             {