BUG: React PropType warning that the canBePasted type is wrong

[markusguenther]

Description

For the NodeToolBar, we evaluate the current number of node context paths in the clipboard. Depending on this count, we proceed to check if there is a node that can be pasted.

When there are no nodes in the clipboard, the function returns a numeric value. This mismatch between a number and a boolean causes the warning.

Steps to Reproduce

1. Open a neos backend
2. ensure you have no nodes in the clipboard
3. click on a inline editable element

Expected behavior

No warning!

Actual behavior

Affected Versions

Neos: 8.3

UI: 8.3