Actions are not recognized when in parallel steps.

**Describe the bug**
Actions used in steps that use the parallel shorthand are not recognized by the extension and do not appear with information about the action.

**To Reproduce**
Steps to reproduce the behavior:
1. In a job, create a step that uses the parallel keyword.
2. Attempt to use at least one action in a step.
3. Observe the missing action details.

**Expected behavior**
Similarly to normal steps, actions in parallel steps are recognized and are ctrl+clickable & have information that is viewable on hover.

**Screenshots**
Parallel action (notice there is no underline):

Normal action (also shows information about the action on hover):

**Extension Version**
`v0.32.1`

先使用採用 parallel 簡寫的 GitHub Actions 工作重現問題，然後比較平行步驟和一般步驟中的 action 識別情況。追蹤擴充功能的 action-link 和 hover-information 路徑；當平行步驟中的 action 能像一般步驟中的 action 一樣被識別、可透過 ctrl+click 點選，並在游標暫留時顯示資訊時，即表示完成。

由索引模型根據 Issue 內容生成。