fix: timing for PrefixLogger call to /whoami
This commit fixes the timing of the /whoami call used for the
PrefixLogger (a logger for puter.js that displays app names) to ensure
the API origin and token are available. This is done by waiting for a
service called 'api-access' to be initialized first.
This was discovered while testing changes for /whoami responses that
display icons, because the current behavior breaks the call for
non-puter.com instances.