chore: update test cases

Author: magic-akari

crates/swc/tests/fixture/issues-8xxx/8552/input/.swcrc

@@ -0,0 +1,13 @@
+{
+    "jsc": {
+        "parser": {
+            "syntax": "typescript",
+            "decorators": true
+        },
+        "transform": {
+            "decoratorVersion": "2022-03"
+        },
+        "target": "es2022"
+    },
+    "isModule": true
+}

crates/swc/tests/fixture/issues-8xxx/8552/input/index.ts

@@ -0,0 +1,4 @@
+abstract class C {
+    abstract [Symbol.iterator]();
+    declare [Symbol.toStringTag];
+}

crates/swc/tests/fixture/issues-8xxx/8552/output/index.ts

@@ -0,0 +1,2 @@
+class C {
+}