Restarting task should read the updated content

[anthonykim1]

Resolves: #169267

Fixing two things in this PR:

• Issue where re-run last task did not check for task update, did not re-read the tasks.json content
• Issue where re-starting running task did not check for task update, or deletion

[anthonykim1]

Had to move this here for code layer!

[anthonykim1]

Proof of testing both restarting on going task and re-running last task:

restarting:
https://github.com/user-attachments/assets/c256624f-17ed-4997-96d4-62e1da4f1c86

rerunning last task:

Screen.Recording.2025-06-18.at.12.31.14.PM.mov

[meganrogge]

@anthonykim1 thanks for working on this! Can you test this on a longrunning task for which you get the notification "the task is already active" vs a single run task like the one in your gif?

[anthonykim1]

@meganrogge Thanks for reviewing!

Yeah, actually I'm not sure why that notification didn't show up in the first gif (the one that prints for 30 second).
I'm wondering if it needs to be continuous like compile task. Let me see if I get better luck with those.

Edit: Oh, wait I'm finally able to get the notification, but this only shows up sometimes when I re-run, not when I restart from command palette:

Just found a bug where re-starting non-changed compile task leads to error, will investigate and fix!