[`refurb`] Implement `repeated-global` (`FURB154`) #27762

Job	Run time
mkdocs	2m 13s
Determine changes	8s
cargo fmt	17s
pre-commit	39s
python package	1m 19s
cargo build (release)	4m 23s
cargo fuzz	4m 14s
cargo clippy	1m 34s
benchmarks	4m 1s
cargo test (linux)	3m 49s
cargo test (windows)	8m 18s
cargo test (wasm)	1m 24s
cargo udeps	1m 56s
test scripts	59s
formatter instabilities and black similarity	0s
ecosystem	8m 11s
test ruff-lsp	22s
Fuzz the parser	0s
	43m 47s

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