fix: 修复swiper在item数量太少时无法循环的问题 #16800

Job	Run time
Testing on Rust	1m 29s
Build Rust WASM / stable - wasm32-wasi	1m 49s
Build Rust Binding / stable - x86_64-apple-darwin	3m 22s
Build Rust Binding / stable - x86_64-pc-windows-msvc	5m 21s
Build Rust Binding / stable - x86_64-unknown-linux-gnu	3m 16s
Build Rust Binding / stable - x86_64-unknown-linux-musl	3m 37s
Build Rust Binding / stable - aarch64-apple-darwin	3m 26s
Testing on Node.js 18.x (ubuntu-latest)	15m 39s
Testing on Node.js 20.x (ubuntu-latest)	14m 24s
Testing on Node.js (macos-12)	21m 55s
Testing on Node.js (windows-latest)	19m 13s
	1h 33m 31s

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