fix: Update the validator criteria to allow wifi config is empty when DHCP is false

[choonkeat1986]

Describe the issue
When create a profile with a network configuration for wired connection as static. There will be error promp when try to save the profile. The error promp as such "Invalid input: Key: 'Profile.WiFiConfigs' Error:Field validation for 'WiFiConfigs' failed on the 'excluded_if' tag"

What are you changing?
Update the profile validator to allow the wificonfig is empty when DHCP is false.

Tested:

• Added profile with DHCP is false and save the profile without error.

[Copilot]

Pull request overview

Updates profile validation to allow empty wifiConfigs when dhcpEnabled is false, preventing erroneous validation failures when saving static wired profiles.

Changes:

• Replaced excluded_if validation on WiFiConfigs with a custom wifidhcp validator.
• Registered the new validator in profile routes and added parallelized validation-focused HTTP tests.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 4 comments.

File	Description
internal/entity/dto/v1/profile.go	Adds ValidateWiFiDHCP and switches WiFiConfigs to use the new wifidhcp binding tag.
internal/controller/httpapi/v1/profiles.go	Registers the new wifidhcp validator with Gin’s validator engine.
internal/controller/httpapi/v1/profiles_test.go	Adds validation tests and introduces a shared custom validator with locking to support parallel tests.

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[codecov]

Codecov Report

❌ Patch coverage is 85.71429% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 39.66%. Comparing base (5b7221f) to head (1951c2f).

Files with missing lines	Patch %	Lines
internal/controller/httpapi/v1/profiles.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #799      +/-   ##
==========================================
+ Coverage   39.63%   39.66%   +0.02%     
==========================================
  Files         113      113              
  Lines       10754    10761       +7     
==========================================
+ Hits         4262     4268       +6     
- Misses       6093     6094       +1     
  Partials      399      399              

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