Update selected value stream after deletion

Summary

After deleting a value stream, we should redirect to a new value stream or the default if there are no others.

The following discussion from !42193 (merged) should be addressed:

• @jerasmus started a discussion: (+1 comment)

  @ekigbo this might not be related to this work, so feel free to open a follow-up issue or point me to an existing issue, but when I delete a value stream, the deleted value stream stays selected in the dropdown: