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Hello,I am new to Safari extensions. I have been given the task of porting a legacy Safari extension over to a new Safari App Extension. I have managed to do so. However, when I build the extension using XCode, it first opens an empty window. Like a blank dialog box with my extension's name as the title. The same thing happens if I archive the extension and run the .app file. My extension will have no user interface. How can I hide this window?Thanks!