FIR: add test for synthetic property access

idea/testData/fir/multiModule/javaSyntheticProperty/extraDump.java.txt

@@ -0,0 +1,6 @@
+public/*package*/ open class JavaClass : R|kotlin/Any| {
+    public open operator fun getFoo(): R|ft<kotlin/String, kotlin/String?>|!
+
+    public constructor(): R|JavaClass|
+
+}

idea/testData/fir/multiModule/javaSyntheticProperty/jvm/JavaClass.java

@@ -0,0 +1,3 @@
+class JavaClass {
+    public String getFoo() { return null; }
+}

idea/testData/fir/multiModule/javaSyntheticProperty/jvm/Test.kt

@@ -0,0 +1 @@
+val x = JavaClass().foo

idea/testData/fir/multiModule/javaSyntheticProperty/jvm/Test.txt

@@ -0,0 +1,3 @@
+FILE: Test.kt
+    public final val x: R|ft<kotlin/String, kotlin/String?>|! = R|/JavaClass.JavaClass|().R|/JavaClass.foo|
+        public get(): R|ft<kotlin/String, kotlin/String?>|!