WebPositive: fix cmd+esc handling

* Don't show the menu in MenusBeginning, this is invoked for all
shortcuts, so cmd+C and others would show the menu. Fixes #9186.
* Instead, show the interface specifically for the CMD+ESC case. Also,
send that key event to the default window handler so the menu opens.
Before, this was mistakenly sent to the "stop" button. Fixes #10523.

src/apps/webpositive/BrowserWindow.cpp

@@ -706,9 +706,13 @@ BrowserWindow::DispatchMessage(BMessage* message, BHandler* target)
 				return;
 			}
 		} else if (bytes[0] == B_ESCAPE) {
-			// Default escape key behavior:
+			if (modifierKeys == B_COMMAND_KEY)
-			PostMessage(STOP);
+				_ShowInterface(true);
-			return;
+			else {
+				// Default escape key behavior:
+				PostMessage(STOP);
+				return;
+			}
 		}
 	}
 
@@ -1113,7 +1117,6 @@ BrowserWindow::MenusBeginning()
 {
 	_UpdateHistoryMenu();
 	_UpdateClipboardItems();
-	_ShowInterface(true);
 }