[BUG] Browser exceptions are no longer automatically tracked after 2.8.0

Description/Screenshot Using 2.8.0, browser exceptions are no longer automatically caught and tracked. No error handler is present on the window.

Steps to Reproduce

1. Install 2.8.0 and throw an exception in the browser. Check Application Insights failures panel for errors. No exceptions are presented. No exceptions are added to the /track network request payload.
2. Install 2.7.4 and repeat. Exceptions are tracked, and the handler is present on the window.

• OS/Browser: MacOS/Chrome
• SDK Version: 2.8.0
• How you initialized the SDK:

export const appInsights = new ApplicationInsights({
  config: {
    instrumentationKey,
    extensions: [reactPlugin],
    enableDebug,
    loggingLevelConsole: enableDebug ? 2 : 0,
    loggingLevelTelemetry: enableDebug ? 2 : 1,
    autoTrackPageVisitTime: true,
    enableAutoRouteTracking: true,
    enableDebugExceptions: enableDebug,
    enableUnhandledPromiseRejectionTracking: true,
    enableCorsCorrelation: false,
    enableRequestHeaderTracking: true,
    enableResponseHeaderTracking: true,
  },
});

enableDebug=true

Expected behavior

As above, the exceptions thrown in the browser are tracked - the handler is present on the window.

[MSNev]

v2.8.3 is now fully deployed to the CDN

[WoodyWoodsta]

@MSNev Thank you for raising #1815 to fix this issue 😃