Fix TaskDoc.set_entry

[janosh]

Fixes atomate2 defect workflow test. See materialsproject/atomate2#548 (comment) for details.

[janosh]

Not sure why self.get_entry was required since task_id is optional in TaskDoc.get_entry:

emmet/emmet-core/emmet/core/tasks.py

Lines 594 to 596 in 6ac53ec

	def get_entry(
	calcs_reversed: List[Calculation], task_id: Optional[str] = None
	) -> ComputedEntry:

[jmmshn]

Also, can we add a test case to check that the entry field is populated?

PS: Notes on the behavior of TaskDoc.get_entry in a dynamic WF.

https://github.com/materialsproject/emmet/blob/6ac53ecb4b34a1e508a32cb807fa4c864c991086/emmet-core/emmet/core/tasks.py#L619C1-L626

The potcar_spec cannot be parsed since you cannot iterate through a Response object.
The oxide_type cannot be properly parsed either since that function is not wrapped in a job.

[janosh]

Also, can we add a test case to check that the entry field is populated?

Done in daa0034.