Push indicator is not discarded when pushing a new branch

[fcollonval]

1. Create a new branch
2. Push it to the remote
3. The push indicator does not disappear

Versions:
jupyterlab 2.2.9 pyhd8ed1ab_0 conda-forge
jupyterlab-git 0.23.3 pyhd8ed1ab_0 conda-forge