IR: do not build fake overrides for static members of interfaces

Split members into static/non-static, and only build fake overrides for
inherited static members of classes.

 #KT-65276 Fixed
 #KT-65277 Fixed

compiler/testData/codegen/box/javaInterop/statics/inheritTwoStaticMethods.kt

@@ -0,0 +1,18 @@
+// TARGET_BACKEND: JVM
+// JVM_TARGET: 1.8
+// FILE: A.java
+public interface A {
+    static String foo() { return "OK"; }
+}
+
+// FILE: B.java
+public interface B {
+    static String foo() { return "Fail"; }
+}
+
+// FILE: box.kt
+class C : A, B {
+    fun test(): String = A.foo()
+}
+
+fun box(): String = C().test()