Custom headers are not sent

[llamafilm]

Inspector Version
0.21.2

Describe the bug
Custom headers are not sent. I'm not using authentication, but I need to set this header for my proxy to work properly.

To Reproduce

1. Configure an HTTP server with type=direct
2. In the Authentication section, add a custom header called x-custom1 without configuring any other authentication options
3. Click Connect
4. Observe headers with tcpdump

Expected behavior
The x-custom1 header should be sent

Actual behavior
Tcpdump shows the custom header name has been added to access-control-request-headers, but the custom header itself is not sent:

.X......OPTIONS /mcp HTTP/1.1
Host: localhost:2002
Connection: keep-alive
Accept: */*
Access-Control-Request-Method: POST
Access-Control-Request-Headers: content-type,x-custom-auth-headers,x-custom1
Origin: http://localhost:6274
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
Sec-Fetch-Mode: cors
Sec-Fetch-Site: same-site
Sec-Fetch-Dest: empty
Referer: http://localhost:6274/
Accept-Encoding: gzip, deflate, br, zstd
Accept-Language: en-US,en;q=0.9

Screenshots
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Environment (please complete the following information):

• OS: MacOS
• Browser: Brave

Additional context