Support instantiation of Java annotations with defaults

For annotations defined in Java, IrProperties do not contain initializers in backing fields,
as annotation properties are represented as Java methods.
Therefore, it is not possible to use initializer values as default values for constructor parameters.

However, K2 stores default values in annotation's constructor parameters,
so it is possible to fix this issue if they're properly transfered to the IR
and inspected in JvmAnnotationImplementationTransformer

#KT-47702 Fixed
#KT-47702 tag fixed-in-k2

compiler/testData/codegen/box/annotations/instances/javaExistingAnnotation.kt

@@ -0,0 +1,31 @@
+// TARGET_BACKEND: JVM_IR
+// IGNORE_BACKEND_K1: JVM_IR
+// IGNORE_DEXING
+// WITH_STDLIB
+// !LANGUAGE: +InstantiationOfAnnotationClasses
+
+// MODULE: lib
+// FILE: LibAnnotation.java
+
+package a;
+
+public @interface LibAnnotation {
+    long longValue() default 4;
+    String stringValue() default "OK";
+    Class<?> classValue() default String.class;
+    float[] floatArrayValue() default { 9.0f, 10.0f };
+}
+
+// MODULE: app(lib)
+// FILE: app.kt
+
+package test
+
+import a.*
+
+fun box(): String {
+    val l = LibAnnotation()
+    if (l.toString() != "@a.LibAnnotation(longValue=4, stringValue=OK, classValue=class java.lang.String, floatArrayValue=[9.0, 10.0])")
+        return l.toString()
+    return "OK"
+}