crash reporter: add popup asking to confirm to send_report

electrum/gui/qml/components/ExceptionDialog.qml

@@ -77,7 +77,17 @@ ElDialog
                 Layout.fillWidth: true
                 Layout.preferredWidth: 3
                 text: qsTr('Send Bug Report')
-                onClicked: AppController.sendReport(user_text.text)
+                onClicked: {
+                    var dialog = app.messageDialog.createObject(app, {
+                        text: qsTr('Confirm to send bugreport?'),
+                        yesno: true,
+                        z: 1001  // assure topmost of all other dialogs
+                    })
+                    dialog.accepted.connect(function() {
+                        AppController.sendReport(user_text.text)
+                    })
+                    dialog.open()
+                }
             }
             Button {
                 Layout.fillWidth: true

electrum/gui/qt/exception_window.py

@@ -83,7 +83,7 @@ class Exception_Window(BaseCrashReporter, QWidget, MessageBoxMixin, Logger):
         buttons = QHBoxLayout()
 
         report_button = QPushButton(_('Send Bug Report'))
-        report_button.clicked.connect(lambda _checked: self.send_report())
+        report_button.clicked.connect(lambda _checked: self._ask_for_confirm_to_send_report())
         report_button.setIcon(read_QIcon("tab_send.png"))
         buttons.addWidget(report_button)
 
@@ -103,6 +103,10 @@ class Exception_Window(BaseCrashReporter, QWidget, MessageBoxMixin, Logger):
         self.setLayout(main_box)
         self.show()
 
+    def _ask_for_confirm_to_send_report(self):
+        if self.question("Confirm to send bugreport?"):
+            self.send_report()
+
     def send_report(self):
         def on_success(response: CrashReportResponse):
             text = response.text