Placing an uploaded file in-room causes the 2D UI to crash

[Exairnous]

Description
When you go to place an uploaded file in-room the Hubs 2D UI crashes.

To Reproduce
Steps to reproduce the behavior:

1. Go to the "Place" menu and choose "Upload".
2. Observe the Hubs 2D UI go white and an error is printed in the browser console (see below).

Expected behavior
You should be able to upload a file from the "Place" menu without crashing the 2D UI.

Hardware

• Device: Laptop
• OS: Linux
• Browser: Chromium

Additional context
Error message:

react-dom.production.min.js:189 TypeError: t.split is not a function
    at m (index.esm.mjs:69:33)
    at Fe (index.esm.mjs:1915:21)
    at ou (react-dom.production.min.js:244:482)
    at ku (react-dom.production.min.js:263:46)
    at wu (react-dom.production.min.js:260:446)
    at bu (react-dom.production.min.js:259:431)
    at react-dom.production.min.js:283:96
    at _s (react-dom.production.min.js:281:398)
    at ss (react-dom.production.min.js:273:439)
    at Ba (react-dom.production.min.js:127:105)
react-dom.production.min.js:127 Uncaught TypeError: t.split is not a function
    at m (index.esm.mjs:69:33)
    at Fe (index.esm.mjs:1915:21)
    at ou (react-dom.production.min.js:244:482)
    at ku (react-dom.production.min.js:263:46)
    at wu (react-dom.production.min.js:260:446)
    at bu (react-dom.production.min.js:259:431)
    at react-dom.production.min.js:283:96
    at _s (react-dom.production.min.js:281:398)
    at ss (react-dom.production.min.js:273:439)
    at Ba (react-dom.production.min.js:127:105)

[keianhzo]

Fixed by #6135