feat(rust): Enable the 'arithmetic-side-effects' Clippy lint #2624

Job	Run time
ci / discover	15s
ci / check / .+check-bash	29s
ci / check / .+check-markdown	28s
ci / check / .+check-spelling	40s
ci / check / ./examples/go+check	35s
ci / check / ./examples/postgresql+check	42s
ci / check / ./examples/python+check	44s
ci / check / ./examples/rust+check	43s
ci / check / ./utilities/cql-to-d2+check	28s
ci / check / ./utilities/earthly-cache-watcher+check	41s
ci / check / ./utilities/fetcher+check	42s
ci / check / ./utilities/jorm-metrics-server+check	44s
ci / build / ./examples/go+build	31s
ci / build / ./examples/postgresql+build	3m 0s
ci / build / ./examples/rust+build	1m 0s
ci / build / ./examples/wasm/c+build	47s
ci / build / ./utilities/fetcher+build	26s
ci / build / ./utilities/jorm-metrics-server+build	26s
ci / package	0s
ci / test	0s
ci / docs	0s
ci / release	0s
ci / deploy	0s
ci / final	0s
	13m 21s

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