[Frontend]: Hide token dropdown from service account option

Why are we doing this work

Component to Update

Add the component ee/app/assets/javascripts/security_orchestration/components/policy_editor/scan_result/advanced_settings/policy_exceptions/service_accounts.vue to be implemented according to the designs.

Hide a dropdown for tokens

Relevant links

Non-functional requirements

• Documentation:
• Feature flag:
• Performance:
• Testing:

Implementation plan

Verification steps