fix(types): correct forward usage

Author: RobertCraigie

src/cloudflare/types/request_tracers/trace.py

@@ -10,7 +10,7 @@
 
 
 if TYPE_CHECKING or PYDANTIC_V2:
-    Trace = TypeAliasType("Trace", "List[TraceItem]")
+    Trace = TypeAliasType("Trace", List["TraceItem"])
 else:
     Trace: TypeAlias = List["TraceItem"]