[K/Wasm] Allow to export unsigned numbers

compiler/testData/codegen/boxWasmJsInterop/wasmImport.kt

@@ -20,6 +20,16 @@ export { sub as "" }
 export { sub as "\n  \r  \t" }
 export default sub;
 
+// FILE: 3.mjs
+
+export function provideUByte() { return -1 }
+
+export function provideUShort() { return -1 }
+
+export function provideUInt() { return -1 }
+
+export function provideULong() { return -1n }
+
 // FILE: wasmImport.kt
 import kotlin.wasm.WasmImport
 
@@ -50,6 +60,18 @@ external fun sub5(x: Float, y: Float): Float
 @WasmImport("./2.mjs", "default")
 external fun sub6(x: Float, y: Float): Float
 
+@WasmImport("./3.mjs", "provideUByte")
+external fun provideUByte(): UByte
+
+@WasmImport("./3.mjs", "provideUShort")
+external fun provideUShort(): UShort
+
+@WasmImport("./3.mjs", "provideUInt")
+external fun provideUInt(): UInt
+
+@WasmImport("./3.mjs", "provideULong")
+external fun provideULong(): ULong
+
 fun box(): String {
     if (addImportRenamed(5, 6) != 11) return "Fail1"
     if (add(5, 6) != 11) return "Fail1"
@@ -62,5 +84,10 @@ fun box(): String {
     if (sub5(5f, 6f) != -1f) return "Fail6"
     if (sub6(5f, 6f) != -1f) return "Fail7"
 
+    if (provideUByte() != UByte.MAX_VALUE) return "Fail9"
+    if (provideUShort() != UShort.MAX_VALUE) return "Fail10"
+    if (provideUInt() != UInt.MAX_VALUE) return "Fail11"
+    if (provideULong() != ULong.MAX_VALUE) return "Fail12"
+
     return "OK"
 }