feat(multi-srp): add keyringId to getMnemonic fn

[PatrykLucka]

No description provided.

[PatrykLucka]

@metamaskbot publish-preview

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 94.75%. Comparing base (6861362) to head (436f4e8).
Report is 102 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2983   +/-   ##
=======================================
  Coverage   94.75%   94.75%           
=======================================
  Files         497      497           
  Lines       10896    10896           
  Branches     1674     1674           
=======================================
  Hits        10325    10325           
  Misses        571      571           

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[PatrykLucka]

@metamaskbot publish-preview

[FrederikBolding]

Closing as this was added in another PR.