Improve error handling when acquiring aad tokens (#1746)

* Mostly working - some cosmetic changes remaining.

* Cosmetic changes and other tidy ups.

* More clean up.

* Move msal back to dependencies. Fix typo.

* msal should be prod dependency

* Revert msal package update as it is causing issues with unit test
execution.

* Add tracing for unhandled exceptions when acquiring tokens.

package.json

@@ -78,8 +78,8 @@
     "mkdirp": "1.0.4",
     "monaco-editor": "0.44.0",
     "ms": "2.1.3",
-    "patch-package": "8.0.0",
     "p-retry": "4.6.2",
+    "patch-package": "8.0.0",
     "plotly.js-cartesian-dist-min": "1.52.3",
     "post-robot": "10.0.42",
     "q": "1.5.1",
@@ -238,4 +238,4 @@
     "printWidth": 120,
     "endOfLine": "auto"
   }
-}
+}