#17668 disabled support for "copy to clipboard" and "go to definition" context menu items in Firefox. 

Use cases

- [x] copy to clipboard (#17740)
- [x] jump to element node (blocked by Firefox bugs [1605597](https://bugzilla.mozilla.org/show_bug.cgi?id=1605597), [1609671](https://bugzilla.mozilla.org/show_bug.cgi?id=1609671), [1609677](https://bugzilla.mozilla.org/show_bug.cgi?id=1609677))
- [x] jump to function definition (blocked by Firefox bugs [1605597](https://bugzilla.mozilla.org/show_bug.cgi?id=1605597), [1609671](https://bugzilla.mozilla.org/show_bug.cgi?id=1609671), [1609677](https://bugzilla.mozilla.org/show_bug.cgi?id=1609677))
if (container._hasInitialHTMLBeenCleared) {
          return;
        }
        container.innerHTML = '';
        container._hasInitialHTMLBeenCleared = true;
      }
      function setBrowserSelectionFromReact() {
        
        
        
        chrome.devtools.inspectedWindow.eval(
          '(window.__REACT_DEVTOOLS_GLOBAL_HOOK__.$0 !== $0) ?' +
            '(inspect(window.__REACT_DEVTOOLS_GLOBAL_HOOK__.$0), true) :' +
            'false',
          (didSelectionChange, evalError) => {
            if (evalError) {
              console.error(evalError);
            }
          },
        );
      }
      function setReactSelectionFromBrowser() {