Tree views in current branch/workflows/settings is sorted by repo name length

**Describe the bug**
This is an _unexpected_ behavior. The order of the items in the tree views are sorted by _the length of the repository name_. This is an unreasonable sorting strategy! 😅

**To Reproduce**
Steps to reproduce the behavior:
1. Login
2. Look at the workflows

**Expected behavior**
I expect the workflows to be sorted by some _reasonable_ means like a) alphabetically or b) order appearing the workspace. The easiest would be just alphabetically. Finding the correct repository workflow now is hard. I need to think about how _long the name of the repository is_ 🤯

**Screenshots**
If applicable, add screenshots to help explain your problem.

**Extension Version**
`v0.26.2`

まず、この VS Code 拡張機能で Current Branch、Workflows、Settings のツリービュー実装を見つけ、リポジトリ名がどのように並べ替えられているかを追跡します。要求どおり並べ替えをアルファベット順に変更し、影響を受けるビュー、特に Workflows が、リポジトリ名の長さで並べ替えられなくなったことを確認します。

索引モデルが issue の本文から書いたものです。