Single indent for multi-declarations for official codestyle (KT-27847)

#KT-27847 Fixed

idea/testData/formatter/ContinuationIndentForExpressionBodies.after.inv.kt

@@ -1,4 +1,11 @@
 fun foo() =
     2
 
+data class A(val a: Int, val b: Int)
+
+fun test() {
+    val (a, b) =
+        A()
+}
+
 // SET_TRUE: CONTINUATION_INDENT_FOR_EXPRESSION_BODIES

idea/testData/formatter/ContinuationIndentForExpressionBodies.kt

@@ -1,4 +1,11 @@
 fun foo() =
         2
 
+data class A(val a: Int, val b: Int)
+
+fun test() {
+    val (a, b) =
+            A()
+}
+
 // SET_TRUE: CONTINUATION_INDENT_FOR_EXPRESSION_BODIES