JVM_IR: do not generate accessors to lateinit private properties

compiler/testData/codegen/box/properties/lateinit/nameClash.kt

@@ -0,0 +1,17 @@
+// IGNORE_BACKEND_FIR: JVM_IR
+
+class SS {
+    private lateinit var s: String
+
+    fun setS(s: String) {
+        this.s = s
+    }
+
+    fun getS() = s
+}
+
+fun box(): String {
+    val ss = SS()
+    ss.setS("OK")
+    return ss.getS()
+}