BUGFIX: Prevent proptype warning regarding canBePasted property (#3900)

If clipboardNodesContextPaths.length is 0, this part will be interpreted as false (because 0 is considered "falsy" in JavaScript). The entire expression will then be 0 without evaluating the second part. This happens due to short-circuit evaluation in JavaScript.

With this change we ensure that the value is always a boolean value.

packages/neos-ui-guest-frame/src/InlineUI/NodeToolbar/Buttons/PasteClipBoardNode/index.js

@@ -15,7 +15,7 @@ import {selectors, actions} from '@neos-project/neos-ui-redux-store';
 
     return (state, {contextPath}) => {
         const clipboardNodesContextPaths = selectors.CR.Nodes.clipboardNodesContextPathsSelector(state);
-        const canBePasted = clipboardNodesContextPaths.length && (clipboardNodesContextPaths.every(clipboardNodeContextPath => {
+        const canBePasted = Boolean(clipboardNodesContextPaths.length && clipboardNodesContextPaths.every(clipboardNodeContextPath => {
             return canBePastedSelector(state, {
                 subject: clipboardNodeContextPath,
                 reference: contextPath