[Bitbucket]: PR merge failure error pop up description

[jeremyfiel]

Is your feature request related to a problem? Please describe.
Merging a pull request has requirements such as: passing build status

The extension throws an error but does not give specific details of the reason the merge failed.

Merging the pull request has been vetoed is very generic.

Describe the solution you'd like
Provide a clear indication to the user why the merge has failed. Prevent merge button from action until all PR merge requirements are satisfied.

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
Add any other context or screenshots about the feature request here.

[bwieger-atlassian-com]

@jeremyfiel Thanks for raising this! This would offer clarity and keep folks in context.

We will look at this when it becomes the next most important thing to do.

Right now, we are solving auth issues and improving the sidebar UI.

[jeremyfiel]

after the build succeeds, the merge button remains inactive. this should also be rectified