drag and drop of files is broken on Mac

[autonome]

Describe the bug
Dropping a file on the Files page of webui when opened in IPFS Desktop fails with an error.

To Reproduce
Steps to reproduce the behavior:

1. Open the Files screen from the IPFS Desktop menubar application
2. Drag a file from Finder and drop it on the screen
3. See error in screenshot

Expected behavior
The file is added to IPFS and shows up in the Files list

Screenshots

Desktop (please complete the following information):

• OS: Mac OS 10.14.6 (18G1012)
• Browser: Chrome (Electron)
• IPFS Desktop: 0.10.2

Additional context

Console log:

TypeError: Cannot read property 'startsWith' of undefined
at D (main.4e777785.chunk.js:1)
at main.4e777785.chunk.js:1
at l (5.efc4ede5.chunk.js:1)
at Generator._invoke (5.efc4ede5.chunk.js:1)
at Generator.S.forEach.e. [as next] (5.efc4ede5.chunk.js:1)
at n (5.efc4ede5.chunk.js:1)
at u (5.efc4ede5.chunk.js:1)

[lidel]

@autonome just to confirm it is limited to Electron runtime on Mac: do you get the same error when opening Web UI via IPFS Companion's browser action menu in regular Chromium-based browser? (Google Chrome or Brave)

[autonome]

Aha, reproduced on Chrome Canary.