Lets swap "election" for "intent" of fiduciary since we know fiscal year is actually elected on first 1041. Then yes, a proper fiscal year would be 2/7/2021 through 1/31/2022 and technically short year, still, since the tax period cannot exceed 12 months and needs to end on the last day of a month. 2/7/2021 to 2/28/2022 obviously exceeds 12 months, so a short year return is required if FEBRUARY were to be the end of fiscal year.
The end date of a 1040 in year of death is the date of death. But that is also technically the start of an estate. While this is generally inconsequential, it is why you often see the estate beginning the day after date of death. If fiscal year, then fiscal year end would be the last day of the month prior to anniversary of death.
In the event a fiduciary screws up and actually elects a fiscal year end of February with a February date of death, and income exists between date of death and end of fiscal year, then yes, I believe there would be a short year 1041 covering Feb 7 (or 8) to Feb 28, 2021, and another covering either the full 12 months of March 1, 2021 to February 28, 2022, or a short year ending on date the estate is closed out after March 1, 2021.
Why did I bother commenting about treatment in event of potential fiduciary error(s)? Because in the work I have done on them, the fiduciaries have almost always made some sort of error or even filed an initial 1041 on their own before consulting with a lawyer, CPA, etc.