fix: Task and its pinned version not synchronized

[CsCherrYY]

fix #1245

before:

1245before.mp4

after:

1245after.mp4

[Eskibear]

LGTM but when do/will you clear the mapping? (E.g. if I unpin some tasks.)

[CsCherrYY]

LGTM but when do/will you clear the mapping? (E.g. if I unpin some tasks.)

We should clear the map as well in reset function. When you unpin a task, the view is refreshed, and the reset method will also be called.

[CsCherrYY]

To verify:

1. git clone https://github.com/spring-projects/spring-petclinic
2. open in VS Code and wait for project imported
3. find task "bootRun" in Gradle projects view -> Tasks -> application group
4. right click "bootRun" task and pin it
5. add a breakpoint in main method of PetClinicApplication class
6. right click "bootRun" task and choose "debug task", the debug session will stop at the breakpoint
7. check the status of "bootRun" task in both applicaiton group and pinned group, the status are consistent and correct
8. can stop the task from the item in pinned group.

[Eskibear]

verified