Automatic error reporting (#7046)

* Enable sentry global handlers if automaticErrorReporting is on

* Pass the exception through on session restore error

Passing the exception object itself through to the BugReportDialog means a stack trace can be correctly recorded in Sentry

src/components/views/settings/tabs/user/LabsUserSettingsTab.tsx

@@ -92,6 +92,7 @@ export default class LabsUserSettingsTab extends React.Component<{}, IState> {
                 <SettingsFlag name="enableWidgetScreenshots" level={SettingLevel.ACCOUNT} />
                 <SettingsFlag name="showHiddenEventsInTimeline" level={SettingLevel.DEVICE} />
                 <SettingsFlag name="lowBandwidth" level={SettingLevel.DEVICE} />
+                <SettingsFlag name="automaticErrorReporting" level={SettingLevel.DEVICE} />
                 { hiddenReadReceipts }
             </div>;
         }