[Wasm] Update testData after adding K2 and new test infra support.

- Actualize muted K2 tests
- Actualize muted K1 tests with module systems because legacy Wasm test
  infra had no respect for "// MODULE: ..." test directives

compiler/testData/codegen/box/enum/enumEntriesMultimoduleNoMappings.kt

@@ -1,4 +1,4 @@
-// IGNORE_BACKEND: JS, JVM, WASM
+// IGNORE_BACKEND: JS, JVM
 // WITH_STDLIB
 
 // MODULE: lib

compiler/testData/codegen/box/enum/enumEntriesNameClashes.kt

@@ -1,5 +1,5 @@
 // !LANGUAGE: +EnumEntries
-// IGNORE_BACKEND_K2: JVM_IR, JS_IR, NATIVE
+// IGNORE_BACKEND_K2: JVM_IR, JS_IR, NATIVE, WASM
 // IGNORE_BACKEND: JS, JVM
 // WITH_STDLIB