Use Class.forName instead of ClassLoader.loadClass in reflection

This fixes an issue in constructing annotation instances with array
class elements. For some reason, behavior of `ClassLoader.loadClass`
differs from `Class.forName` in handling arrays, namely:

* `loadClass("[Ltest.Foo;")` returns null
* `Class.forName("[Ltest.Foo;")` returns class for array of test.Foo

Overall, there doesn't seem to be any way to load an array class with
`CLassLoader.loadClass`.

We pass initialize=false to forName because this is the behavior of
ClassLoader.loadClass: it doesn't perform class initialization (e.g.
<clinit> is not executed).

 #KT-31318 Fixed

core/descriptors.runtime/src/kotlin/reflect/jvm/internal/components/ReflectJavaClassFinder.kt

@@ -46,7 +46,7 @@ class ReflectJavaClassFinder(private val classLoader: ClassLoader) : JavaClassFi
 
 fun ClassLoader.tryLoadClass(fqName: String) =
     try {
-        loadClass(fqName)
+        Class.forName(fqName, false, this)
     } catch (e: ClassNotFoundException) {
         null
     }