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

compiler/testData/diagnostics/tests/redeclarations/RedeclaringPrivateToFile.fir.kt

@@ -0,0 +1,49 @@
+// FILE: a.kt
+package a
+
+interface A
+interface B : A
+
+private fun validFun() {}
+private val validVal = 1
+
+private fun invalidFun0() {}
+private val invalidProp0 = 1
+
+// NB invalidFun0 and invalidProp0 are conflicting overloads, since the following is an ambiguity:
+fun useInvalidFun0() = invalidFun0()
+fun useInvalidProp0() = invalidProp0
+
+private fun invalidFun1() {}
+private fun invalidFun1() {}
+
+private fun invalidFun2() {}
+public fun invalidFun2() {}
+
+public fun invalidFun3() {}
+
+private fun invalidFun4() {}
+public fun invalidFun4() {}
+
+public fun validFun2(a: A) = a
+public fun validFun2(b: B) = b
+
+// FILE: b.kt
+package a
+
+private fun validFun() {}
+private val validVal = 1
+
+private fun invalidFun0() {}
+
+private val invalidProp0 = 1
+
+internal fun invalidFun3() {}
+internal fun invalidFun4() {}
+
+// FILE: c.kt
+package a
+
+public fun invalidFun0() {}
+
+public val invalidProp0 = 1