new WFJT launch schema and cleanup

awx/api/serializers.py

@@ -2709,18 +2709,15 @@ class WorkflowJobLaunchSerializer(BaseSerializer):
     variables_needed_to_start = serializers.ReadOnlyField()
     survey_enabled = serializers.SerializerMethodField()
     extra_vars = VerbatimField(required=False, write_only=True)
-    warnings = serializers.SerializerMethodField()
     workflow_job_template_data = serializers.SerializerMethodField()
 
     class Meta:
         model = WorkflowJobTemplate
-        fields = ('can_start_without_user_input', 'extra_vars', 'warnings',
+        fields = ('can_start_without_user_input', 'extra_vars',
                   'survey_enabled', 'variables_needed_to_start',
+                  'node_templates_missing', 'node_prompts_rejected',
                   'workflow_job_template_data')
 
-    def get_warnings(self, obj):
-        return obj.get_warnings()
-
     def get_survey_enabled(self, obj):
         if obj:
             return obj.survey_enabled and 'spec' in obj.survey_spec

awx/api/views.py

@@ -2946,7 +2946,10 @@ class WorkflowJobTemplateLaunch(WorkflowsEnforcementMixin, RetrieveAPIView):
     always_allow_superuser = False
 
     def update_raw_data(self, data):
-        obj = self.get_object()
+        try:
+            obj = self.get_object()
+        except PermissionDenied:
+            return data
         extra_vars = data.pop('extra_vars', None) or {}
         if obj:
             for v in obj.variables_needed_to_start: