JVM IR: Optimize static property references (KT-36975)

compiler/testData/codegen/bytecodeText/callableReference/kt36975.kt

@@ -0,0 +1,10 @@
+// FILE: test.kt
+class A(val value: String)
+
+fun box(): String {
+    val ref = A::value
+    return ref(A("OK"))
+}
+
+// Check that non-bound callable references are generated as singletons
+// 1 GETSTATIC TestKt\$box\$ref\$1.INSTANCE