Unable to copy paste screenshots

**Describe the bug**
After taking a screenshot and copying it to the clipboard, still unable to paste the screenshot into CATcher

**OS and Browser**
- OS: Ubuntu 18.04
- Browser: Edge 95.0.1020.20 (Official Build) beta (64-bit), Chrome Version 95.0.4638.54 (Official Build) (64-bit)

**Steps to reproduce the behaviour:**
1. Take a screenshot
2. Copy to clipboard
3. Right-click and paste into CATcher

**Expected behaviour**
Screenshot appears in the issue description, as described in the module website.

**Additional Info**
- Tried with and without Incognito, both didn't work

Reproduce the issue on Ubuntu 18.04 using Chrome 95 or Edge 95: take a screenshot, copy it to the clipboard, and paste it into CATcher. Trace the screenshot paste behavior from the browser-facing TypeScript entry point; done means the screenshot appears in the issue description as documented.

Written by the indexing model from the issue text.