Bug: Context Copy command does not work

[Mikhail-Bobrov-XT]

Description

Using context (right-click) Copy command does not work (ClipboardItem is not defined).

Expected behavior

Context Copy should work.

To Reproduce

1. Select cells to copy.
2. Right-click, select "Copy".
3. Observe red popup notification "ClipboardItem is not defined".

Environment

• Mathesar version: 0.8.0
• OS: Windows 10
• Browser: Firefox
• Browser Version: 146.0
• Other info:

Additional context