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

compiler/testData/diagnostics/tests/imports/InaccessiblePrivateClass.fir.kt

@@ -0,0 +1,18 @@
+// FILE: a.kt
+package p1
+
+private class X
+private class Y
+
+// FILE: b.kt
+package p2
+
+class X
+
+// FILE: c.kt
+package p1
+
+import p2.*
+
+val x: X = X()
+val y: Y = <!INAPPLICABLE_CANDIDATE!>Y<!>()