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

compiler/testData/diagnostics/tests/classObjects/resolveFunctionInsideClassObject.fir.kt

@@ -0,0 +1,9 @@
+package test
+
+class Test {
+  fun test(): Int = 12
+
+  companion object {
+    val a = <!UNRESOLVED_REFERENCE!>test<!>() // Check if resolver will be able to infer type of a variable
+  }
+}