TrailingCommaInspection: should suggest fixes for call-site without warnings

#KT-39131 Fixed

idea/testData/inspectionsLocal/trailingComma/whenEntry.kt

@@ -0,0 +1,9 @@
+// COMPILER_ARGUMENTS: -XXLanguage:+TrailingCommas
+// FIX: Add line break
+
+fun a() {
+    when (val b = 5) {
+        1, 2,
+        3, <caret>->
+    }
+}