in `#[var]s`, handle renamed `#[func]`s #3238

Job	Run time
clippy	1m 38s
doc-lints	48s
godot-itest (macos)	1m 1s
godot-itest (windows)	1m 57s
godot-itest (linux-full)	2m 20s
run-examples	1m 7s
license-guard	30s
godot-itest (linux-features-experimental)	2m 5s
rustfmt	10s
godot-itest (linux-4.1)	1m 1s
unit-test	2m 33s
godot-itest (linux-4.2)	58s
godot-itest (linux-memcheck)	2m 28s
ci-status	1s
	18m 37s

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