Allow HPA to work when Inference is enabled

[sjberman]

Problem: When the Inference Extension was enabled, the additional container was not given resource specifications, which prevented the HPA from working.

Solution: Add the resource specifications from the NGINX container to the inference container.
Testing: Manually verified that HPA now works with inference enabled

Closes #4245

Checklist

Before creating a PR, run through this checklist and mark each as complete.

• I have read the CONTRIBUTING doc
• I have added tests that prove my fix is effective or that my feature works
• I have checked that all unit tests pass after adding my changes
• I have updated necessary documentation
• I have rebased my branch onto main
• I will ensure my PR is targeting the main branch and pulling from my branch from my own fork

Release notes

If this PR introduces a change that affects users and needs to be mentioned in the release notes,
please add a brief note that summarizes the change.

Fix bug that prevented HPA from working when Inference Extension was enabled.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 86.10%. Comparing base (b960d89) to head (391b5bb).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4247      +/-   ##
==========================================
+ Coverage   86.08%   86.10%   +0.01%     
==========================================
  Files         131      131              
  Lines       14171    14174       +3     
  Branches       35       35              
==========================================
+ Hits        12199    12204       +5     
+ Misses       1768     1766       -2     
  Partials      204      204              

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

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.