change globalObject to "this" (#6287)

Co-authored-by: Pontus Wallberg <pontus.wallberg@configura.com>

webpack/bundle.babel.js

@@ -29,6 +29,7 @@ const result = configBuilder(
       ],
     },
     output: {
+      globalObject: "this",
       library: "SwaggerUIBundle",
     },
     plugins: [

webpack/core.babel.js

@@ -20,6 +20,7 @@ const result = configBuilder(
     },
 
     output: {
+      globalObject: "this",
       library: "SwaggerUICore",
     },
   }

webpack/standalone.babel.js

@@ -16,6 +16,7 @@ const result = configBuilder(
     },
 
     output: {
+      globalObject: "this",
       library: "SwaggerUIStandalonePreset",
     },
   }