[BUG] Attempted to assign to readonly property.

Reproduce the failure with bun install -g http-server, http-server -d false -i, and curl http://localhost:8080. Start with union/lib/response-stream.js at the _headerNames assignment and trace the request through union/lib/routing-stream.js and union/lib/core.js; done means the exception is handled and the host continues serving.

Environment Versions

1. OS Type: Ubuntu 22.04.01 LTS
2. Node version: node version unavailable. bun version 1.3.11
3. http-server version: 14.1.1

Steps to reproduce

1. bun install -g http-server
2. http-server -d false -i
3. curl http://localhost:8080

Expected result

Maybe 404? But at least capture the exception and keep serving the host.

Actual result

~# http-server -d false -i
Starting up http-server, serving ./

http-server version: 14.1.1

http-server settings: 
CORS: disabled
Cache: 3600 seconds
Connection Timeout: 120 seconds
Directory Listings: not visible
AutoIndex: not visible
Serve GZIP Files: false
Serve Brotli Files: false
Default File Extension: none

<After curl the service>

48 | 
49 |   if (this.response) {
50 |     this._headers = this.response._headers = this.response._headers || {};
51 | 
52 |     // Patch to node core
53 |     this.response._headerNames = this.response._headerNames || {};
              ^
TypeError: Attempted to assign to readonly property.
      at <anonymous> (node:_http_outgoing:360:17)
      at new  (/root/.bun/install/global/node_modules/union/lib/response-stream.js:53:10)
      at new  (/root/.bun/install/global/node_modules/union/lib/routing-stream.js:30:17)
      at requestHandler (/root/.bun/install/global/node_modules/union/lib/core.js:27:25)
      at emit (node:events:98:22)
      at onNodeHTTPRequest (node:_http_server:367:22)
DeprecationWarning: OutgoingMessage.prototype._headers is deprecated
 code: "DEP0066"

      at <anonymous> (internal:util/deprecate:9:30)
      at deprecated (internal:util/deprecate:20:29)
      at new  (/root/.bun/install/global/node_modules/union/lib/response-stream.js:50:51)
      at new  (/root/.bun/install/global/node_modules/union/lib/routing-stream.js:30:17)
      at requestHandler (/root/.bun/install/global/node_modules/union/lib/core.js:27:25)
      at emit (node:events:98:22)
      at onNodeHTTPRequest (node:_http_server:367:22)


Bun v1.3.11 (Linux x64)

After the error log, this process is self-terminated.

Other information