fix: add workspace in FillIDs

[randmonkey]

What this PR does / why we need it:

Add the workspace parameter in filling IDs of Kong entities to avoid generating the same ID for entities with same "key" (like username in consumers) in different workspaces.

Which issue this PR fixes:

Fixes #5389

Special notes for your reviewer:

PR Readiness Checklist:

Complete these before marking the PR as ready to review:

• the CHANGELOG.md release notes have been updated to reflect any significant (and particularly user-facing) changes introduced by this PR

[codecov]

Codecov Report

Attention: 4 lines in your changes are missing coverage. Please review.

Comparison is base (81d9d41) 69.3% compared to head (b55166a) 69.2%.
Report is 1 commits behind head on main.

Files	Patch %	Lines
internal/dataplane/kongstate/kongstate.go	33.3%	0 Missing and 4 partials ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##            main   #5401     +/-   ##
=======================================
- Coverage   69.3%   69.2%   -0.1%     
=======================================
  Files        176     176             
  Lines      22355   22358      +3     
=======================================
- Hits       15497   15487     -10     
- Misses      5932    5940      +8     
- Partials     926     931      +5     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.