Fix oauth2 transform keys except type

rswag-specs/lib/rswag/specs/swagger_formatter.rb

@@ -197,7 +197,10 @@ module Rswag
 
           ActiveSupport::Deprecation.warn("Rswag::Specs: WARNING: securityDefinitions flow is replaced in OpenAPI3! Rename to components/securitySchemes/#{name}/flows[] (in swagger_helper.rb)")
           flow = swagger_doc[:components][:securitySchemes][name].delete(:flow)
-          swagger_doc[:components][:securitySchemes][name].merge!(flows: [flow])
+          flow_elements = swagger_doc[:components][:securitySchemes][name].except(:type).each_with_object({}) do |(k, _v), a|
+            a[k] = swagger_doc[:components][:securitySchemes][name].delete(k)
+          end
+          swagger_doc[:components][:securitySchemes][name].merge!(flows: { flow => flow_elements })
         end
       end
     end

rswag-specs/spec/rswag/specs/swagger_formatter_spec.rb

@@ -79,7 +79,9 @@ module Rswag
               components: {
                 securitySchemes: {
                   my_oauth: {
-                    flow: :anything
+                    type: :oauth2,
+                    flow: :anything,
+                    token_url: :somewhere
                   }
                 }
               }
@@ -128,7 +130,12 @@ module Rswag
               components: {
                 securitySchemes: {
                   my_oauth: {
-                    flows: [:anything]
+                    type: :oauth2,
+                    flows: {
+                      anything: {
+                        token_url: :somewhere
+                      }
+                    }
                   }
                 }
               }