FIR: Support enhanced types when checking if Java type is primitive

compiler/testData/diagnostics/tests/j+k/integerNotNullable.kt

@@ -0,0 +1,23 @@
+// FIR_IDENTICAL
+// FILE: Box.java
+import org.jetbrains.annotations.NotNull;
+
+public class Box<T> {
+    public void put(@NotNull T t) {}
+}
+
+// FILE: IntBox.java
+import org.jetbrains.annotations.NotNull;
+
+public class IntBox extends Box<Integer> {
+    public int result = 0;
+    @Override
+    public void put(@NotNull Integer t) {
+        result = t;
+    }
+}
+
+// FILE: main.kt
+fun main() {
+    IntBox().put(1)
+}