fix: ignore SIGHUP when run with nohup

[joway]

What type of PR is this?

fix

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• This PR title match the format: <type>(optional scope): <description>
• The description of this PR title is user-oriented and clear enough for others to understand.
• Attach the PR updating the user documentation if the current PR requires user awareness at the usage level. User docs repo

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(Optional) More detailed description for this PR(en: English/zh: Chinese).

en: https://stackoverflow.com/questions/64479821/why-hangup-signal-is-caught-even-with-nohup
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(Optional) Which issue(s) this PR fixes:

Fixes #1050

(optional) The PR that updates user documentation:

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: -0.05% ⚠️

Comparison is base (4eff11b) 67.86% compared to head (011304c) 67.81%.

❗ Current head 011304c differs from pull request most recent head ce0cdf5. Consider uploading reports for the commit ce0cdf5 to get more accurate results

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1055      +/-   ##
===========================================
- Coverage    67.86%   67.81%   -0.05%     
===========================================
  Files          252      252              
  Lines        18996    18999       +3     
===========================================
- Hits         12891    12885       -6     
- Misses        4924     4935      +11     
+ Partials      1181     1179       -2     

Files Changed	Coverage Δ
internal/server/option.go	94.11% <100.00%> (+0.36%)	⬆️

... and 4 files with indirect coverage changes

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