[LL FIR] add tests for synthetic property

^KT-61990

analysis/low-level-api-fir/testData/lazyResolve/syntheticProperties/secondGenerationOverride.kt

@@ -0,0 +1,43 @@
+// SKIP_WHEN_OUT_OF_CONTENT_ROOT
+// MEMBER_NAME_FILTER: something
+// FILE: Derived.kt
+class Der<caret>ived : KotlinBase() {
+    @Anno("second generation getSomething: ${getterProperty}")
+    override fun getSomething(): String {
+        "body: ${propertyFromBody}"
+    }
+
+    @Anno("second generation setSomething: ${setterProperty}")
+    override fun setSomething(s: @Anno("setter type ${propertyFromSetter}") String) = println("str $s")
+}
+
+open class KotlinBase : Base() {
+    @Anno("first generation getSomething: ${getterProperty}")
+    override fun getSomething(): String {
+        "body: ${propertyFromBody}"
+    }
+
+    @Anno("first generation setSomething: ${setterProperty}")
+    override fun setSomething(s: @Anno("setter type ${propertyFromSetter}") String) {
+        println(s)
+    }
+}
+
+@Target(AnnotationTarget.FUNCTION, AnnotationTarget.TYPE)
+annotation class Anno(val s: String)
+
+val getterProperty = 2.let { it + 1 }
+val setterProperty = 2.let { it + 1 }
+val propertyFromBody = "str" + 1.toString()
+val propertyFromSetter = 1.toString() + "2"
+
+// FILE: Base.java
+public class Base {
+    public String getSomething() {
+        return "";
+    }
+
+    public void setSomething(String s) {
+
+    }
+}