[FIR TEST]: add test with Map.Entry-based J/K hierarchy

compiler/fir/resolve/testData/resolve/stdlib/j+k/MapEntry.kt

@@ -0,0 +1,23 @@
+// FILE: Test.java
+
+import java.lang.*;
+import java.util.*;
+
+public class Test {
+    public static class MapEntryImpl implements Map.Entry<String, String> {
+        public String getKey() { return null; }
+        public String getValue() { return null; }
+        public String setValue(String s) { return null; }
+    }
+}
+
+// FILE: main.kt
+
+class MyMapEntry : Test.MapEntryImpl()
+
+fun test() {
+    val b = MyMapEntry()
+    b.key
+    b.value
+    b.setValue(null)
+}

compiler/fir/resolve/testData/resolve/stdlib/j+k/MapEntry.txt

@@ -0,0 +1,13 @@
+FILE: main.kt
+    public final class MyMapEntry : R|Test.MapEntryImpl| {
+        public constructor(): R|MyMapEntry| {
+            super<R|Test.MapEntryImpl|>()
+        }
+
+    }
+    public final fun test(): R|kotlin/Unit| {
+        lval b: R|MyMapEntry| = R|/MyMapEntry.MyMapEntry|()
+        R|<local>/b|.R|/Test.MapEntryImpl.key|
+        R|<local>/b|.R|/Test.MapEntryImpl.value|
+        R|<local>/b|.R|/Test.MapEntryImpl.setValue|(Null(null))
+    }

compiler/fir/resolve/tests/org/jetbrains/kotlin/fir/FirDiagnosticsWithStdlibTestGenerated.java

@@ -489,6 +489,11 @@ public class FirDiagnosticsWithStdlibTestGenerated extends AbstractFirDiagnostic
             runTest("compiler/fir/resolve/testData/resolve/stdlib/j+k/LoggerInstance.kt");
         }
 
+        @TestMetadata("MapEntry.kt")
+        public void testMapEntry() throws Exception {
+            runTest("compiler/fir/resolve/testData/resolve/stdlib/j+k/MapEntry.kt");
+        }
+
         @TestMetadata("MyException.kt")
         public void testMyException() throws Exception {
             runTest("compiler/fir/resolve/testData/resolve/stdlib/j+k/MyException.kt");