fix: add session roles to iam owner (#9413)

# Which Problems Are Solved

Currently I am not able to run the new login with a service account with
an IAM_OWNER role.
As the role is missing some permissions which the LOGIN_CLIENT role does
have

# How the Problems Are Solved

Added session permissions to the IAM_OWNER

---------

Co-authored-by: Livio Spring <livio.a@gmail.com>

cmd/defaults.yaml

@@ -1297,6 +1297,8 @@ InternalAuthZ:
         - "userschema.read"
         - "userschema.write"
         - "userschema.delete"
+        - "session.read"
+        - "session.delete"
     - Role: "IAM_OWNER_VIEWER"
       Permissions:
         - "iam.read"
@@ -1332,6 +1334,7 @@ InternalAuthZ:
         - "action.target.read"
         - "action.execution.read"
         - "userschema.read"
+        - "session.read"
     - Role: "IAM_ORG_MANAGER"
       Permissions:
         - "org.read"