[DUOS-1948][risk=no] Ignore tos if Sam does not return a userStatus object

[shaemarks]

Addresses DUOS-1948
Changes:

• Check before re-directing user to tos acceptance page that the userStatus object returned from Sam is not empty
• Solution to repeated tos redirects due to Sam error

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• Label PR with a Jira ticket number and include a link to the ticket
• Label PR with a security risk modifier [no, low, medium, high]
• PR describes scope of changes
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[rushtong]

Great solution!

[lu-c]

LGTM