Soft disable the biasMetrics feature flag

[andrewballantyne]

https://issues.redhat.com/browse/RHOAIENG-13107

Description

(soft) Disable trusty bias metrics feature flag as the cache loads in the OdhDashboardConfig

Arch docs are being added in support to explain this design.

Note: Client feature flags feature can still enable it if needed.

How Has This Been Tested?

Running the server locally.

Test Impact

None

Request review criteria:

Self checklist (all need to be checked):

• The developer has manually tested the changes and verified that the changes work
• Testing instructions have been added in the PR body (for PRs involving changes that are not immediately obvious).
• The developer has added tests or explained why testing cannot be added (unit or cypress tests for related changes)

If you have UI changes:

• Included any necessary screenshots or gifs if it was a UI change.
• Included tags to the UX team if it was a UI/UX change.

After the PR is posted & before it merges:

• The developer has tested their solution on a cluster by using the image produced by the PR to main

[openshift-ci]

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[andrewballantyne]

/hold

Need architectural direction confirmation & a test of the image on cluster.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.49%. Comparing base (853029b) to head (095628c).
Report is 5 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3233      +/-   ##
==========================================
- Coverage   85.50%   85.49%   -0.01%     
==========================================
  Files        1280     1280              
  Lines       28229    28229              
  Branches     7558     7558              
==========================================
- Hits        24136    24135       -1     
- Misses       4093     4094       +1     

see 6 files with indirect coverage changes

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