TrailingCommaPostFormatProcessor: should be completed in one round

#KT-34744

idea/testData/formatter/trailingComma/lambdaParameters/LambdaParameterList.after.inv.kt

@@ -76,9 +76,7 @@ val x = { x: String
     println("1")
 }
 
-val x = {
-    x: String,
-    ->
+val x = { x: String ->
     println("1")
 }
 

idea/testData/formatter/trailingComma/lambdaParameters/LambdaParameterList.after.kt

@@ -82,9 +82,7 @@ val x = {
     println("1")
 }
 
-val x = {
-    x: String,
-    ->
+val x = { x: String ->
     println("1")
 }