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

compiler/testData/diagnostics/tests/multimodule/packagePrivate.fir.kt

@@ -0,0 +1,19 @@
+// MODULE: m1
+// FILE: a.kt
+
+package p
+
+private val a = 1
+
+// FILE: b.kt
+
+package p
+
+val b = <!INAPPLICABLE_CANDIDATE!>a<!> // same package, same module
+
+// MODULE: m2(m1)
+// FILE: c.kt
+
+package p
+
+val c = <!INAPPLICABLE_CANDIDATE!>a<!> // same package, another module