Restore secretariats ability to edit session requests when the tool is locked for chairs

`owner:rcross@amsl.com` `resolution_fixed` `type_defect`   |    by rjsparks@nostrum.com

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Right now, the secretariat has to unlock to tool for everyone to use the edit form.

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_Issue migrated from trac:3547 at 2022-03-04 09:28:11 +0000_