slapos_subscription_request: Email shouldn't use coordinate_interaction_workflow on Slapos Master

Subscription and Trial uses setDefaultEmailText when create a Trial/Subscription as annonymous which will trigger this workflow and raise Unauthorized when invoke Coordinate_beforeCoordinateTextChange.

As Reacheability/Unreacheability is not tracked on SlapOS master for now, so this commits remove the interaction workflow for Email (only).

master/bt5/slapos_subscription_request/PortalTypeWorkflowChainTemplateItem/workflow_chain_type.xml

 <workflow_chain>
+ <chain>
+  <type>Email</type>
+  <workflow>-coordinate_interaction_workflow</workflow>
+ </chain>
  <chain>
   <type>Subscription Condition</type>
   <workflow>commerce_validation_workflow, edit_workflow</workflow>

master/bt5/slapos_subscription_request/bt/template_portal_type_workflow_chain_list

+Email | -coordinate_interaction_workflow
 Subscription Condition | commerce_validation_workflow
 Subscription Condition | edit_workflow
 Subscription Request | edit_workflow