Uncaught Exception in Web Inspector when triggering a global event breakpoint.

Steps to Reproduce:
1. Open sources tab
2. Click "+" button next to "Breakpoints"
3. Select "Event Breakpoint..."
4. Type "click"
5. Trigger "click" event on the web page


Uncaught Exceptions:
-----------------------
 - undefined is not an object (evaluating 'this._allListenersBreakpoint.disabled') (at DOMDebuggerManager.js:357:97)
    listenerBreakpointForEventName @ DOMDebuggerManager.js:357:97
    _updatePauseReasonSection @ SourcesNavigationSidebarPanel.js:1691:87
    _updatePauseReasonSection @ SourcesNavigationSidebarPanel.js:1559:47
    _handleDebuggerPaused @ SourcesNavigationSidebarPanel.js:2280:36
    dispatch @ Object.js:165:30
    dispatchEventToListeners @ Object.js:172:17
    debuggerDidPause @ DebuggerManager.js:955:42
    paused @ DebuggerObserver.js:60:44
    _dispatchEvent @ Connection.js:210:26
    dispatch @ Connection.js:79:32
    dispatchMessageFromTarget @ TargetManager.js:176:39
    dispatchMessageFromTarget @ TargetObserver.js:47:51
    _dispatchEvent @ Connection.js:210:26
    dispatch @ Connection.js:79:32
    dispatch @ InspectorBackend.js:232:52
    ? @ MessageDispatcher.js:42:34

Additional Details:
    cause --> An uncaught exception was thrown while handling event: Debugger.paused
-----------------------

Notes:
Inspected URL:        react-like-button-demo/index.html
Loading completed:    true
Frontend User Agent:  Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_6) AppleWebKit/605.1.15 (KHTML, like Gecko)
Dispatch Source:      Protocol Event

Protocol Event:
{"method":"Debugger.paused","params":{"callFrames":[{"callFrameId":"{\"ordinal\":0,\"injectedScriptId\":15}","functionName":"unstable_runWithPriority","location":{"scriptId":"54","lineNumber":2668,"columnNumber":12},"scopeChain":[{"object":{"type":"object","objectId":"{\"injectedScriptId\":15,\"id\":1}","className":"JSLexicalEnvironment","description":"JSLexicalEnvironment"},"type":"closure","name":"unstable_runWithPriority","location":{"scriptId":"54","lineNumber":2668,"columnNumber":36}},{"obj…