Add tests for Java synthetic properties in external dependencies

compiler/testData/ir/irText/stubs/javaSyntheticProperty.kt

@@ -0,0 +1,8 @@
+// !DUMP_DEPENDENCIES
+// FILE: javaSyntheticProperty.kt
+val test = J().foo
+
+// FILE: J.java
+class J {
+    public String getFoo() { return null; }
+}