[MM-50527] Explicitly allow the Mattermost views access to write to the clipboard using Copy Link (#2565)

* [MM-50527] Explicitly allow the Mattermost views access to write to the clipboard using Copy Link

* Include calls widget window

* Add calls popout to the list as well

* Update src/main/app/initialize.ts

Co-authored-by: Christopher Poile <cpoile@gmail.com>

---------

Co-authored-by: Christopher Poile <cpoile@gmail.com>

src/main/app/initialize.ts

@@ -380,12 +380,15 @@ function initializeAfterAppReady() {
         'notifications',
         'fullscreen',
         'openExternal',
+        'clipboard-sanitized-write',
     ];
 
     // handle permission requests
     // - approve if a supported permission type and the request comes from the renderer or one of the defined servers
     defaultSession.setPermissionRequestHandler((webContents, permission, callback) => {
-    // is the requested permission type supported?
+        log.debug('permission requested', webContents.getURL(), permission);
+
+        // is the requested permission type supported?
         if (!supportedPermissionTypes.includes(permission)) {
             callback(false);
             return;
@@ -398,6 +401,18 @@ function initializeAfterAppReady() {
             return;
         }
 
+        const callsWidgetWindow = WindowManager.callsWidgetWindow;
+        if (callsWidgetWindow) {
+            if (webContents.id === callsWidgetWindow.win.webContents.id) {
+                callback(true);
+                return;
+            }
+            if (callsWidgetWindow.popOut && webContents.id === callsWidgetWindow.popOut.webContents.id) {
+                callback(true);
+                return;
+            }
+        }
+
         const requestingURL = webContents.getURL();
         const serverURL = WindowManager.getServerURLFromWebContentsId(webContents.id);
 

src/main/windows/callsWidgetWindow.ts

@@ -39,7 +39,7 @@ type LoadURLOpts = {
 export default class CallsWidgetWindow extends EventEmitter {
     public win: BrowserWindow;
     private main: BrowserWindow;
-    private popOut: BrowserWindow | null = null;
+    public popOut: BrowserWindow | null = null;
     private mainView: MattermostView;
     private config: CallsWidgetWindowConfig;
     private boundsErr: Rectangle = {