fix: LEAP-15: Only email is used for ff evaluation

[triklozoid]

PR fulfills these requirements

• Commit message(s) and PR title follows the format [fix|feat|ci|chore|doc]: TICKET-ID: Short description of change made ex. fix: DEV-XXXX: Removed inconsistent code usage causing intermittent errors
• Tests for the changes have been added/updated (for bug fixes/features)
• Docs have been added/updated (for bug fixes/features)
• Best efforts were made to ensure docs/code are concise and coherent (checked for spelling/grammatical errors, commented out code, debug logs etc.)
• Self-reviewed and ran all changes on a local instance (for bug fixes/features)

Change has impacts in these area(s)

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• Product design
• Backend (Database)
• Backend (API)
• Frontend

Describe the reason for change

(link to issue, supportive screenshots etc.)

What does this fix?

(if this is a bug fix)

What is the new behavior?

(if this is a breaking or feature change)

What is the current behavior?

(if this is a breaking or feature change)

What libraries were added/updated?

(list all with version changes)

Does this change affect performance?

(if so describe the impacts positive or negative)

Does this change affect security?

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What alternative approaches were there?

(briefly list any if applicable)

What feature flags were used to cover this change?

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Does this PR introduce a breaking change?

(check only one)

• Yes, and covered entirely by feature flag(s)
• Yes, and covered partially by feature flag(s)
• No
• Not sure (briefly explain the situation below)

What level of testing was included in the change?

(check all that apply)

• e2e
• integration
• unit

Which logical domain(s) does this change affect?

(for bug fixes/features, be as precise as possible. ex. Authentication, Annotation History, Review Stream etc.)

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[codecov]

Codecov Report

Patch coverage has no change and project coverage change: -0.06% ⚠️

Comparison is base (d0e6bc4) 75.92% compared to head (21c99a4) 75.86%.
Report is 2 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #4647      +/-   ##
===========================================
- Coverage    75.92%   75.86%   -0.06%     
===========================================
  Files          157      157              
  Lines        12492    12491       -1     
===========================================
- Hits          9484     9476       -8     
- Misses        3008     3015       +7     

see 2 files with indirect coverage changes

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