[K/Wasm] Unmute most of the stepping tests for Wasm in K1

compiler/testData/debug/stepping/defaultParameter.kt

@@ -1,4 +1,4 @@
-// IGNORE_BACKEND: WASM
+
 // FILE: test.kt
 
 class A {
@@ -32,3 +32,12 @@ fun box() {
 // test.kt:5 computeParam
 // test.kt:8 foo
 // test.kt:13 box
+
+// EXPECTATIONS WASM
+// test.kt:1 $box
+// test.kt:12 $box (4, 4, 8, 8, 8, 8)
+// test.kt:9 $A.<init>
+// test.kt:7 $A.foo$default (4, 25, 25, 25, 25, 4)
+// test.kt:5 $A.computeParam (25, 27)
+// test.kt:8 $A.foo
+// test.kt:13 $box