chore: fix map_unwrap_or clippy lint #6362

Job	Run time
debug x86_64-apple-darwin	16m 35s
release x86_64-apple-darwin	12m 22s
asan aarch64-apple-darwin	53m 38s
debug aarch64-apple-darwin	12m 3s
release aarch64-apple-darwin	10m 4s
debug x86_64-unknown-linux-gnu	11m 4s
release x86_64-unknown-linux-gnu	7m 23s
release x86_64-pc-windows-msvc	14m 34s
debug aarch64-unknown-linux-gnu	23m 7s
release aarch64-unknown-linux-gnu	10m 32s
publish	0s
	2h 51m 22s

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