[FIR-TEST] Add new testdata generated after changes in previous commit

compiler/testData/diagnostics/tests/syntheticExtensions/javaProperties/IsNaming.fir.kt

@@ -0,0 +1,37 @@
+// FILE: KotlinFile.kt
+fun foo(javaClass: JavaClass) {
+    javaClass.isSomething = !javaClass.isSomething
+    javaClass.isSomething2 = !javaClass.isSomething2
+
+    javaClass.<!UNRESOLVED_REFERENCE!>something<!>
+    javaClass.isSomethingWrong
+    javaClass.<!UNRESOLVED_REFERENCE!>somethingWrong<!>
+
+    javaClass.<!UNRESOLVED_REFERENCE!>issueFlag<!>
+    javaClass.<!UNRESOLVED_REFERENCE!>isSueFlag<!>
+}
+
+// FILE: JavaClass.java
+public class JavaClass {
+    public boolean isSomething() {
+        return true;
+    }
+
+    public void setSomething(boolean value) {
+    }
+
+    public boolean getIsSomething2() {
+        return true;
+    }
+
+    public void setIsSomething2(boolean value) {
+    }
+
+    public int isSomethingWrong() {
+        return 1;
+    }
+
+    public boolean issueFlag() {
+        return true;
+    }
+}