Add extra check for IE compatibility in xhr instrumentation

[t2t2]

Description

In @opentelemetry/instrumentation-xml-http-request 0.28.0, following source:

    if (
      !xhrMem ||
      typeof PerformanceObserver !== 'function' ||
      typeof PerformanceResourceTiming !== 'function'
    ) {

has been for some reason compiled into

        if (!xhrMem ||
            PerformanceObserver == null ||
            PerformanceResourceTiming == null) {
            return;
        }

Which causes "PerformanceObserver is undefined" error in IE and breaks xhr calls. This seems to be fixed in 0.29.0 but as contrib doesn't have compatible packages adding a hotfix

Type of change

• Bug fix (non-breaking change which fixes an issue)

How has this been tested?

• Manual testing