[Expect/Actual] Add testdata on hierarchical expect/actual matching

idea/testData/multiModuleHighlighting/hierarchicalExpectActualMatching/duplicateExpectsImplicit/bottom/bottom.kt

@@ -0,0 +1,3 @@
+// Note that here we have no ambiguity, becuase we don't consider
+// declarations without 'expect' as potential weakly-compatible 'expect'-counterpart
+actual class A

idea/testData/multiModuleHighlighting/hierarchicalExpectActualMatching/duplicateExpectsImplicit/dependencies.txt

@@ -0,0 +1,6 @@
+MODULE right { platform=[JVM, Native] }
+MODULE left { platform=[JVM, JS] }
+MODULE bottom { platform=[JVM] }
+
+bottom -> right { kind=DEPENDS_ON }
+bottom -> left { kind=DEPENDS_ON }

idea/testData/multiModuleHighlighting/hierarchicalExpectActualMatching/duplicateExpectsImplicit/left/left.kt

@@ -0,0 +1 @@
+expect class <!AMBIGUOUS_ACTUALS("Class 'A'", "bottom.kt, right.kt")!>A<!>

idea/testData/multiModuleHighlighting/hierarchicalExpectActualMatching/duplicateExpectsImplicit/right/right.kt

@@ -0,0 +1 @@
+class A