[Wasm] Fix overloading virtual methods by vararg and array element type

Context:
- Kotlin allows functions overloaded with different array element types.
- Varargs are lowered to Array parameters.
- Before this commit, K/Wasm erased an array element type
  from the signature, similar to type argument erasure in other cases.

Fix:
Stop erasing type arguments in arrays when computing v-table signatures.

^KT-58852 Fixed

compiler/testData/codegen/box/functions/kt58825_arrayOverloads.kt

@@ -0,0 +1,35 @@
+// WITH_REFLECT
+
+// Simplified original example from KT-58825
+
+import kotlin.reflect.*
+
+interface DynamicShapeRegister<T> {
+    fun register(vararg items: KProperty<*>) {}
+    fun register(vararg items: KCallable<*>) {}
+}
+
+class C : DynamicShapeRegister<Int>
+val p: Int = 0
+
+// Additional tests with nested arrays
+
+interface ArrayDimensions {
+    fun getD(x: Array<Int>): String = "1D"
+    fun getD(x: Array<Array<Int>>): String = "2D"
+    fun getD(x: Array<Array<Array<Int>>>): String = "3D"
+    fun getD(x: Array<Array<Array<Array<Int>>>>): String = "4D"
+}
+
+fun box(): String {
+    C().register(::p, ::p)
+    C().register(::box, ::box, ::C)
+
+    val ad: ArrayDimensions = object : ArrayDimensions {}
+    check("1D" == ad.getD(arrayOf(1)))
+    check("2D" == ad.getD(arrayOf(arrayOf(1))))
+    check("3D" == ad.getD(arrayOf(arrayOf(arrayOf(1)))))
+    check("4D" == ad.getD(arrayOf(arrayOf(arrayOf(arrayOf(1))))))
+
+    return "OK"
+}