FIR2IR: expand type before getting nullability #KT-44803 Fixed

compiler/testData/codegen/box/fir/ClassBuilder.kt

@@ -0,0 +1,26 @@
+// TARGET_BACKEND: JVM
+
+// FILE: ClassBuilder.java
+
+import org.jetbrains.annotations.Nullable;
+
+public interface ClassBuilder {
+    void newMethod(@Nullable String[] exceptions);
+}
+
+// FILE: test.kt
+
+typealias JvmMethodExceptionTypes = Array<out String?>?
+
+class TestClassBuilder : ClassBuilder {
+    override fun newMethod(exceptions: JvmMethodExceptionTypes) {
+
+    }
+}
+
+fun box(): String {
+    val arr = arrayOf("OK")
+    TestClassBuilder().newMethod(null)
+    TestClassBuilder().newMethod(arr)
+    return arr[0]
+}