Cleanup AccountController and Clients

[jkoenig134]

Readiness checklist

• I added/updated tests.
• I ensured that the PR title is good enough for the changelog.
• I labeled the PR.
• I self-reviewed the PR.

[codecov]

Codecov Report

Attention: Patch coverage is 85.71429% with 2 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
...ransport/src/modules/accounts/AccountController.ts	83.33%	2 Missing ⚠️

Files with missing lines	Coverage Δ
...t/src/modules/devices/backbone/DeviceAuthClient.ts	91.66% <100.00%> (ø)
packages/transport/src/modules/index.ts	100.00% <ø> (ø)
...ransport/src/modules/accounts/AccountController.ts	87.77% <83.33%> (-0.09%)	⬇️