Crashes in httpc_handler

[itssundeep]

Describe the bug
We see crashes in httpc_handler for connections which are upgraded from http -> https. We notice that once a http connection is established, upgrading the connection to https, drops request_options from the original request. This results in gen_server crashes if the connection has issues and we answer back on these connections.

Example Crash

2025-11-10T13:53:39.886518-08:00 <0.124847.0> otp.log gen_server.erl:2785 == 
error: Generic server <0.124847.0> terminating. 
Label: {http,<<"someserver">>,443}. 
Reason: {
    function_clause,[{proplists,get_value,[full_result,undefined,true],[{file,"proplists.erl"},{line,222}]},
{httpc_handler,format_answer,2,[{file,"httpc_handler.erl"},{line,1744}]},
{httpc_handler,answer_request,3,[{file,"httpc_handler.erl"},{line,1348}]},
{httpc_handler,terminate,2,[{file,"httpc_handler.erl"},{line,327}]},
{gen_server,try_terminate,3,[{file,"gen_server.erl"},{line,2482}]},
{gen_server,terminate,9,[{file,"gen_server.erl"},{line,2733}]},
{proc_lib,init_p_do_apply,3,[{file,"proc_lib.erl"},{line,333}]}]}. 
Last message: 
{init_error,error_connecting,
{#Ref<0.551509106.3093299207.219206>,
{error,
{failed_connect,[{to_address,{"someserver",443}},{inet6,[inet6,{send_timeout,3000},{send_timeout_close,true}],nxdomain}]}}}}.

2025-11-10T13:55:30.376431-08:00 <0.117.0> service.log supervisor.erl:1374 == error: 
Supervisor: {local,httpc_handler_sup}. 
Context: child_terminated. Reason: 
{function_clause,[{proplists,get_value,[full_result,undefined,true],[{file,"proplists.erl"},{line,222}]},
{httpc_handler,format_answer,2,[{file,"httpc_handler.erl"},{line,1744}]},
{httpc_handler,answer_request,3,[{file,"httpc_handler.erl"},{line,1348}]},
{httpc_handler,terminate,2,[{file,"httpc_handler.erl"},{line,327}]},
{gen_server,try_terminate,3,[{file,"gen_server.erl"},{line,2482}]},
{gen_server,terminate,9,[{file,"gen_server.erl"},{line,2733}]},
{proc_lib,init_p_do_apply,3,[{file,"proc_lib.erl"},{line,333}]}]}. Offender: id=undefined,pid=<0.238357.0>.

This issue is introduced due to PR 299be8d

To Reproduce
Not sure how to simulate error on an established connection

Expected behavior
We should not crash

Affected versions
OTP 28

Additional context