CreateExpectActualFix: fix package for files with root package from non-root directory

#KT-28746 Fixed

idea/testData/multiModuleQuickFix/createExpectWithRootPackage/common/path/My.kt.after.kt

@@ -0,0 +1 @@
+expect class `My.kt.after`

idea/testData/multiModuleQuickFix/createExpectWithRootPackage/jvm/path/My.kt

@@ -0,0 +1,4 @@
+// "Create expected class in common module testModule_Common" "true"
+// DISABLE-ERRORS
+
+actual class <caret>My

idea/testData/multiModuleQuickFix/createExpectWithRootPackage/jvm/path/My.kt.after

@@ -0,0 +1,4 @@
+// "Create expected class in common module testModule_Common" "true"
+// DISABLE-ERRORS
+
+actual class My