Describe the bug

Recently I compared lodash's throttle and useThrottleFn. I found the leading and trailing options are different between them.

• Here is how both differs when we call the throttled function 3 times, without waiting, as call1, call2 and call3

So if this isn't intended behavior, that shows there is a problem with leading false option. When leading is false, the second call of the throttled function immediately triggers it.

If you confirm this isn't intended behavior and a bug, I can create a PR with confirming test cases for it too.

This also might be related with #4551

Reproduction

https://stackblitz.com/edit/vueuse-lodash-throttle-compare?file=README.md

System Info

System:
    OS: Linux 5.0 undefined
    CPU: (8) x64 Intel(R) Core(TM) i9-9880H CPU @ 2.30GHz
    Memory: 0 Bytes / 0 Bytes
    Shell: 1.0 - /bin/jsh
  Binaries:
    Node: 20.19.1 - /usr/local/bin/node
    Yarn: 1.22.19 - /usr/local/bin/yarn
    npm: 10.8.2 - /usr/local/bin/npm
    pnpm: 8.15.6 - /usr/local/bin/pnpm
  npmPackages:
    @vueuse/core: ^13.5.0 => 13.5.0

Used Package Manager

npm

Validations

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• Read the Contributing Guidelines.
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• Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.
• Make sure this is a VueUse issue and not a framework-specific issue. For example, if it's a Vue SFC related bug, it should likely be reported to https://github.com/vuejs/core instead.
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• The provided reproduction is a minimal reproducible example of the bug.