Fix that a map with AP and node AP of "private (owner only)" has error when owner attempts to add a child node

[Venryx]

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[Venryx]

Fixed this by changing the RLS policy for "commandRuns" table to always allow the "actor" for the command-run be able to access the entry.

However, this should have been unnecessary in the cases I tested, since the user's "addToStream" setting was true, and they should have had access to all of the targets in "c_accessPolicyTargets".

Ignoring this oddity for now though... :|

[Venryx]

Ignore "oddity" mentioned in previous comment; I forgot that the "base permission" a user has to access their own entry is reliant entirely on these "is_user_creator" checks. (ie. a "Private (owner only)" permission policy returns "false" for "do_policies_allow_access" ALWAYS)