[req] if a user has a None property, fall back to the default
This can happen for InternalManager; the normal CWUser implementation of
property_value already has a similar fallback. Related to #3381521
\.svn
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\~$
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^doc/book/en/apidoc$
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syntax: regexp
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^doc/html/
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^doc/book/en/devweb/js_api/