build: run buildMDViewer before release:dev/staging/prod

Author: abose

package.json

@@ -68,9 +68,9 @@
         "build": "npm run buildMDViewer && npm run _create-src-node-pkg-lock && npm run _buildonly && npm run createJSDocs && npm run zipTestFiles && npm run lint && npm run _vulnerabilityCheck",
         "build:debug": "npm run buildMDViewer && npm run _create-src-node-pkg-lock && npm run _buildonlyDebug && npm run createJSDocs && npm run zipTestFiles && npm run lint && npm run _vulnerabilityCheck",
         "clean": "gulp clean && gulp reset",
-        "release:dev": "gulp releaseDev",
-        "release:staging": "gulp releaseStaging",
-        "release:prod": "gulp releaseProd",
+        "release:dev": "npm run buildMDViewer && gulp releaseDev",
+        "release:staging": "npm run buildMDViewer && gulp releaseStaging",
+        "release:prod": "npm run buildMDViewer && gulp releaseProd",
         "validate:dist-size": "gulp validateDistSizeRestrictions",
         "_releaseWebCache": "gulp releaseWebCache",
         "_patchVersionBump": "gulp patchVersionBump",