KT-11806: increase visibility quick fix: private / internal -> public #KT-11806 Fixed

idea/testData/quickfix/increaseVisibility/overriddenProtectedMemberToPublicSingleFile.kt

@@ -0,0 +1,9 @@
+// "Make x public" "true"
+
+open class Base(protected open val x: Int)
+
+class First(override val x: Int) : Base(x)
+
+class Second(f: First) {
+    val y = f.<caret>x
+}