[wp-trac] [WordPress Trac] #37616: Replace `is_super_admin()` calls with real capability checks

[WordPress Trac]

#37616: Replace `is_super_admin()` calls with real capability checks
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 Reporter:  flixos90         |       Owner:
     Type:  task (blessed)   |      Status:  reviewing
 Priority:  normal           |   Milestone:  4.8
Component:  Role/Capability  |     Version:
 Severity:  normal           |  Resolution:
 Keywords:  needs-patch      |     Focuses:  multisite
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Comment (by flixos90):

 In [changeset:"39944"]:
 {{{
 #!CommitTicketReference repository="" revision="39944"
 Multisite: Replace `is_super_admin()` with `manage_network` when showing a
 message to the network administrator in `wp-signup.php`.

 Props jignesh.nakrani.
 Fixes #39209. See #37616.
 }}}

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Ticket URL: <https://core.trac.wordpress.org/ticket/37616#comment:53>
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