Fix another assertion failure

src/bun.js/api/server.zig

@@ -2182,7 +2182,7 @@ fn NewRequestContext(comptime ssl_enabled: bool, comptime debug_mode: bool, comp
         }
 
         pub fn onStartStreamingRequestBody(this: *RequestContext) JSC.WebCore.DrainResult {
-            if (this.aborted) {
+            if (this.aborted or this.finalized) {
                 return JSC.WebCore.DrainResult{
                     .aborted = void{},
                 };