FIR2IR: don't generate IR getter for const library properties

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

@@ -0,0 +1,18 @@
+// TARGET_BACKEND: JVM
+// MODULE: lib
+// FILE: A.kt
+
+class IrBuiltIns {
+    object OperatorNames {
+        const val LESS = "OK"
+    }
+}
+
+// MODULE: main(lib)
+// FILE: B.kt
+
+fun foo(s: String) = s
+
+fun box(): String {
+    return foo(IrBuiltIns.OperatorNames.LESS)
+}