Handle multiline strings inside of chained calls

Summary:
Noticed that some multiline strings were not formatted and the common thing about them was that they were nested inside of other `QualifiedExpression`s.

The fix is a simple one-liner.

Reviewed By: cortinico

Differential Revision: D81201748

fbshipit-source-id: be59518987efc7aa774f05b3ae48326fbc735f0a

Author: Nivaldo Bondança

CHANGELOG.md

@@ -17,6 +17,7 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/).
 
 ### Fixed
 - Do not apply special format handling of multiline strings with template expressions in them (https://github.com/facebook/ktfmt/issues/556)
+- Make sure that we handle nested expressions for special format handling of multiline strings
 
 
 ## [0.57]

core/src/main/java/com/facebook/ktfmt/format/MultilineStringFormatter.kt

@@ -135,6 +135,7 @@ class MultilineStringFormatter(val continuationIndentSize: Int) {
     file.accept(
         object : KtTreeVisitorVoid() {
           override fun visitQualifiedExpression(expression: KtQualifiedExpression) {
+            super.visitQualifiedExpression(expression)
             val receiver = expression.receiverExpression
             if (receiver !is KtStringTemplateExpression) return
             val isDollarString = receiver.text.startsWith("$$")