J2K: Get nullability from variable initializer when converting call

#KT-11534 In Progress

j2k/testData/fileOrElement/nullability/nullableInitializer1.kt

@@ -0,0 +1,24 @@
+// ERROR: Type mismatch: inferred type is String? but String was expected
+// ERROR: Type mismatch: inferred type is String? but String was expected
+class Test {
+    fun nullableString(p: Int): String? {
+        return if (p > 0) "response" else null
+    }
+
+    private var nullableInitializerField: String = nullableString(3)
+    private val nullableInitializerFieldFinal = nullableString(3)
+    var nullableInitializerPublicField: String = nullableString(3)
+
+    fun testProperty() {
+        nullableInitializerField = "aaa"
+
+        nullableInitializerField[0]
+        nullableInitializerFieldFinal!![0]
+        nullableInitializerPublicField[0]
+    }
+
+    fun testLocalVariable() {
+        val nullableInitializerVal = nullableString(3)
+        nullableInitializerVal!![0]
+    }
+}