test: `copy_into!` on expressions #1490

Job	Run time
test jet - ubuntu-latest	5m 17s
Julia 1 - ubuntu-latest - push	14m 59s
Julia 1 - windows-latest - push	16m 19s
Julia 1 - macOS-latest - push	9m 12s
Julia 1.10 - ubuntu-latest - push	15m 0s
Indicate completion to coveralls	4s
	1h 0m 51s

Provide feedback