[TS][Fetch] Use unescaped media type value (#7210)

* comment out pkmst test for the time being

* use unescaped mediaType in TS fetch

Author: wing328

modules/swagger-codegen/src/main/resources/typescript-fetch/api.mustache

@@ -216,7 +216,7 @@ export const {{classname}}FetchParamCreator = function (configuration?: Configur
             localVarHeaderParameter['Content-Type'] = 'application/json';
             {{/consumes}}
             {{#consumes.0}}
-            localVarHeaderParameter['Content-Type'] = '{{mediaType}}';
+            localVarHeaderParameter['Content-Type'] = '{{{mediaType}}}';
             {{/consumes.0}}
 
     {{/bodyParam}}

pom.xml.circleci

@@ -844,7 +844,7 @@
                 <module>samples/client/petstore/go</module>
                 <!-- servers -->
                 <module>samples/server/petstore/java-inflector</module>
-				<module>samples/server/petstore/java-pkmst</module>
+				<!--<module>samples/server/petstore/java-pkmst</module>-->
                 <module>samples/server/petstore/java-play-framework</module>
                 <module>samples/server/petstore/undertow</module>
                 <module>samples/server/petstore/jaxrs/jersey1</module>