OC writes unintended period blocks and records

[mjreno]

Version: Commit d50342f
Recreate:

• update OC constructor

oc = Oc(
    parent=gwf,
    budget_file=f"{gwf_name}.bud",
    head_file=f"{gwf_name}.hds",
    save_head=["", "all"],
    save_budget=[None, "all"],
)

• change time constructor:

time = ModelTime(perlen=[1.0, 1000.0], nstp=[1, 10], tsmult=[1.0, 1.5])
#time = ModelTime(perlen=[1.0], nstp=[1], tsmult=[1.0])

Result:

BEGIN OPTIONS
 BUDGET FILEOUT mymodel.bud
 HEAD FILEOUT mymodel.hds
END OPTIONS

BEGIN PERIOD 1
 save head
 save budget None
END PERIOD 1

BEGIN PERIOD 2
 save head all
 save budget all
END PERIOD 2

Close if this is not the intended syntax for OC.