Remove library:'' as webpack throws configuration[0].output.library should be an non-empty string

Signed-off-by: Hung-Han (Henry) Chen <1474479+chenhunghan@users.noreply.github.com>

webpack.renderer.ts

@@ -38,7 +38,6 @@ export function webpackLensRenderer({ showVars = true } = {}): webpack.Configura
     },
     output: {
       libraryTarget: "global",
-      library: "",
       globalObject: "this",
       publicPath,
       path: buildDir,