Show Team Explorer Home before starting to clone

[jcansdale]

Note: This is made obsolete by #1982

We need to make sure Team Explorer - Home is visible before the clone operation starts so the user can see progress have the option to cancel.

What this PR does

• Show Team Explorer - Home before clone starts rather than after it finishes

Make sure this UI is visible when cloning:

How to test

1. Open the Clone dialog
2. Start cloning a repository (e.g. https://github.com/dotnet/roslyn)
3. Check Team Explorer - Home / Clone Repository is visible

Fixes #1977

[codecov]

Codecov Report

Merging #1978 into master will decrease coverage by 1.5%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master    #1978      +/-   ##
==========================================
- Coverage   42.36%   40.85%   -1.51%     
==========================================
  Files         370      402      +32     
  Lines       15882    17100    +1218     
  Branches     2190     2370     +180     
==========================================
+ Hits         6728     6986     +258     
- Misses       8620     9564     +944     
- Partials      534      550      +16

Impacted Files	Coverage Δ
src/GitHub.App/Services/RepositoryCloneService.cs	49.48% <100%> (ø)	⬆️
...nlineReviews/Services/PullRequestSessionManager.cs	82.05% <0%> (-1.03%)	⬇️
...c/GitHub.InlineReviews/Tags/InlineCommentTagger.cs	79.64% <0%> (-0.89%)	⬇️
...nlineReviews/Services/PullRequestSessionService.cs	16.7% <0%> (-0.41%)	⬇️
...rc/GitHub.VisualStudio/Commands/OpenLinkCommand.cs	0% <0%> (ø)
...Hub.VisualStudio/Commands/ShowGitHubPaneCommand.cs	0% <0%> (ø)
...o/Commands/GoToSolutionOrPullRequestFileCommand.cs	0% <0%> (ø)
src/GitHub.VisualStudio/Services/UsageTracker.cs	92.53% <0%> (ø)
.../GitHub.VisualStudio/Services/ShowDialogService.cs	0% <0%> (ø)
...Hub.VisualStudio/Commands/ShowMessageBoxCommand.cs	0% <0%> (ø)
... and 27 more

[jcansdale]

This is made obsolete by #1982.