Updates DlsFlsValveImpl condition to return true if request is internal and not a protected resource request

[DarshitChanpura]

Description

During one of the recent change, the condition to handle internal search request was changed slightly such that if request is search and internal and not a protected resource request it would proceed to apply DLS rules, but that is incorrect as requests marked as internal should not have DLS rules applied unless its a resource request. This handles that.

Bug Fix

Testing

Manual + Automated

Check List

• New functionality includes testing
• New functionality has been documented
• New Roles/Permissions have a corresponding security dashboards plugin PR
• API changes companion pull request created
• Commits are signed per the DCO using --signoff

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[codecov]

Codecov Report

❌ Patch coverage is 50.00000% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 73.16%. Comparing base (acadb8c) to head (d3ab6a4).

Files with missing lines	Patch %	Lines
...search/security/configuration/DlsFlsValveImpl.java	50.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5721      +/-   ##
==========================================
+ Coverage   73.15%   73.16%   +0.01%     
==========================================
  Files         412      412              
  Lines       26168    26167       -1     
  Branches     3963     3963              
==========================================
+ Hits        19142    19145       +3     
+ Misses       5125     5123       -2     
+ Partials     1901     1899       -2     

Files with missing lines	Coverage Δ
...search/security/configuration/DlsFlsValveImpl.java	63.60% <50.00%> (-0.12%)	⬇️

... and 5 files with indirect coverage changes

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