fix: possible upload stream starting early

controllers/uploadController.js

@@ -432,6 +432,8 @@ self.actuallyUpload = async (req, res, data = {}) => {
 
         if (hashStream) {
           hashStream.once('error', _reject)
+          // Ensure readStream will only be resumed later down the line by readStream.pipe()
+          readStream.pause()
           readStream.on('data', data => {
             // .dispose() will destroy this internal component,
             // so use it as an indicator of whether the hashStream has been .dispose()'d