Not able to grant access on pg_signal_backend on azure flexible server

[Saksham Joshi]

Hi,
We have created an azure postgresql flexible server and we have added an ad
admin as a user and Created our database using this admin user.However,When
are running this command: 'Grant pg_signal_backend To adminUser' we are
getting an error that says 'permission denied to grant role
"pg_signal_backend".While this is strange the admin user is infact the
owner of the said database and we don't have any other user that have the
said privileges.