Crash when creating a new window using right click menu in macOS dock

Start by reproducing the macOS Dock New Window sequence described in the issue and inspect the crash entry point UIActionHandler::isValidAction in libbinaryninjaui. Trace the action after a newly created window is closed, then verify that repeatedly creating a window from the Dock menu no longer crashes.

Version and Platform (required):

• Binary Ninja Version: 3.6.4712-dev Personal, 599e2ad7
• OS: macos
• OS Version: 14.1
• CPU Architecture: arm64

Steps To Reproduce:

1. Open Binary Ninja
2. Use right click on dock icon and click on New Window (It sometimes open a new window sometimes it does not)
3. If it opened a new window then skip this step. If not, create a new window with File -> New Window
4. Close that new window
5. Try to create a new window again from dock icon right click menu
6. See the crash

Crash log:

Process:               binaryninja [1847]
Path:                  /Applications/Binary Ninja.app/Contents/MacOS/binaryninja
Identifier:            com.vector35.binaryninja
Version:               3.6.4712-dev Personal (3.6.4712-dev Personal)
Code Type:             ARM-64 (Native)

System Integrity Protection: enabled

Crashed Thread:        0  Dispatch queue: com.apple.main-thread

Exception Type:        EXC_BAD_ACCESS (SIGSEGV)
Exception Codes:       KERN_INVALID_ADDRESS at 0x00000ac9d6238828
Exception Codes:       0x0000000000000001, 0x00000ac9d6238828

Termination Reason:    Namespace SIGNAL, Code 11 Segmentation fault: 11
Terminating Process:   exc handler [1847]

VM Region Info: 0xac9d6238828 is not in any region.  Bytes after previous region: 11380961019945  Bytes before following region: 93691118909400
      REGION TYPE                    START - END         [ VSIZE] PRT/MAX SHRMOD  REGION DETAIL
      commpage (reserved)        1000000000-7000000000   [384.0G] ---/--- SM=NUL  ...(unallocated)
--->  GAP OF 0x5f9000000000 BYTES
      MALLOC_NANO              600000000000-600020000000 [512.0M] rw-/rwx SM=PRV  

Thread 0 Crashed::  Dispatch queue: com.apple.main-thread
0   libbinaryninjaui.1.dylib      	       0x1032e78b8 UIActionHandler::isValidAction(QString const&, UIActionContext const&) + 64
1   libbinaryninjaui.1.dylib      	       0x10332341c 0x1032ac000 + 488476
2   QtCore                        	       0x104b68e60 void doActivate<false>(QObject*, int, void**) + 780
3   QtGui                         	       0x1045b6980 QAction::activate(QAction::ActionEvent) + 368
4   QtCore                        	       0x104b61878 QObject::event(QEvent*) + 612
5   QtWidgets                     	       0x103b94cb8 QApplicationPrivate::notify_helper(QObject*, QEvent*) + 272
6   QtWidgets                     	       0x103b95b08 QApplication::notify(QObject*, QEvent*) + 512
7   QtCore                        	       0x104b1f004 QCoreApplication::notifyInternal2(QObject*, QEvent*) + 292
8   QtCore                        	       0x104b202b4 QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) + 1428
9   libqcocoa.dylib               	       0x101f30e5c QCocoaEventDispatcherPrivate::processPostedEvents() + 316
10  libqcocoa.dylib               	       0x101f31840 QCocoaEventDispatcherPrivate::postedEventsSourceCallback(void*) + 460
11  CoreFoundation                	       0x184f69cfc __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 28
12  CoreFoundation                	       0x184f69c90 __CFRunLoopDoSource0 + 176
13  CoreFoundation                	       0x184f69a60 __CFRunLoopDoSources0 + 340
14  CoreFoundation                	       0x184f685f0 __CFRunLoopRun + 828
15  CoreFoundation                	       0x184f67c5c CFRunLoopRunSpecific + 608
16  HIToolbox                     	       0x18f4e4448 RunCurrentEventLoopInMode + 292
17  HIToolbox                     	       0x18f4e4284 ReceiveNextEventCommon + 648
18  HIToolbox                     	       0x18f4e3fdc _BlockUntilNextEventMatchingListInModeWithFilter + 76
19  AppKit                        	       0x188742c54 _DPSNextEvent + 660
20  AppKit                        	       0x188f18ebc -[NSApplication(NSEventRouting) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 716
21  AppKit                        	       0x188736100 -[NSApplication run] + 476
22  libqcocoa.dylib               	       0x101f30084 QCocoaEventDispatcher::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) + 1824
23  QtCore                        	       0x104b28c5c QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) + 532
24  QtCore                        	       0x104b1f690 QCoreApplication::exec() + 112
25  binaryninja                   	       0x1008b99a8 0x100888000 + 203176
26  dyld                          	       0x184b110e0 start + 2360