fix(admin-panel): revise style

[xlisachan]

Because

#10 242.8 ➤ YN0000: [fxa-admin-panel]: Process started
#10 251.8 ➤ YN0000: [fxa-admin-panel]: src/components/AccountSearch/Account/index.tsx(554,24): error TS2304: Cannot find name 'styleClasses'.
#10 251.8 ➤ YN0000: [fxa-admin-panel]: src/components/AccountSearch/Account/index.tsx(556,28): error TS2304: Cannot find name 'styleClasses'.
#10 251.9 ➤ YN0000: [fxa-admin-panel]: ERROR: "build:client" exited with 1.
#10 251.9 ➤ YN0000: [fxa-admin-panel]: Process exited (exit code 1), completed in 9s 156ms

This pull request

• fixes the style from the recent push/merge - feat(admin-panel): Add subscriptions field + display in UI, CSS tweaks #12637 - where:
  • styleClasses.li becomes account.li
  • styleClasses.result is no longer utilized.

Issue that this pull request solves

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