Avoid `atan2` in `minimum_rotated_rect` #3286

Job	Run time
geo (georust/geo-ci:proj-9.3.1-rust-1.70)	24s
geo (georust/geo-ci:proj-9.3.1-rust-1.74)	27s
geo (georust/geo-ci:proj-9.3.1-rust-1.75)	23s
geo-types (georust/geo-ci:proj-9.3.1-rust-1.70)	28s
geo-postgis (georust/geo-ci:proj-9.3.1-rust-1.70)	26s
geo-types (georust/geo-ci:proj-9.3.1-rust-1.74)	28s
lint (georust/geo-ci:proj-9.3.1-rust-1.75)	26s
geo-postgis (georust/geo-ci:proj-9.3.1-rust-1.74)	25s
geo-types (georust/geo-ci:proj-9.3.1-rust-1.75)	25s
geo-postgis (georust/geo-ci:proj-9.3.1-rust-1.75)	23s
bench	24s
build documentation	25s
geo-fuzz (georust/geo-ci:proj-9.3.1-rust-1.75)	24s
ci result	1s
ci result	0s
	5m 29s

Provide feedback