Add is_copy in tests #1642

Job	Run time
cargo-deny-machete	13s
doc-lints	40s
godot-itest (macos-x86)	2m 46s
clippy	1m 5s
license-guard	30s
godot-itest (macos-double-x86)	4m 29s
miri-test	1m 32s
godot-itest (macos-x86-4.2)	2m 33s
proptest	18s
godot-itest (macos-arm)	1m 32s
run-examples	1m 9s
godot-itest (macos-arm-4.2)	1m 0s
rustfmt	11s
godot-itest (windows)	2m 45s
unit-test (macos)	1m 51s
godot-itest (windows-double)	2m 55s
unit-test (windows)	4m 19s
godot-itest (windows-4.2)	3m 5s
unit-test (linux)	2m 36s
godot-itest (linux-full)	2m 27s
unit-test (linux-minimal-deps)	1m 47s
godot-itest (linux-double-lazy)	2m 24s
unit-test (linux-msrv)	2m 24s
godot-itest (linux-features-experimental)	2m 9s
godot-itest (linux-release)	1m 9s
godot-itest (linux-4.3)	1m 21s
godot-itest (linux-4.2)	1m 25s
godot-itest (linux-memcheck-nightly)	1m 53s
godot-itest (linux-memcheck-4.1)	1m 47s
ci-status	0s
	54m 15s

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