perf!: use passive event handlers everywhere is possible

[ferferga]

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⚠️ Slowing down new functions

Warning: Slowing down new functions

As the VueUse audience continues to grow, we have been inundated with an overwhelming number of feature requests and pull requests. As a result, maintaining the project has become increasingly challenging and has stretched our capacity to its limits. As such, in the near future, we may need to slow down our acceptance of new features and prioritize the stability and quality of existing functions. Please note that new features for VueUse may not be accepted at this time. If you have any new ideas, we suggest that you first incorporate them into your own codebase, iterate on them to suit your needs, and assess their generalizability. If you strongly believe that your ideas are beneficial to the community, you may submit a pull request along with your use cases, and we would be happy to review and discuss them. Thank you for your understanding.

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Description

Use passive event handlers wherever original DOM events are used.

Additional context

See my code comment as to why this PR is labeled as having breaking changes, despite at the surface not breaking anything.

[ferferga]

This is the reason why this PR is labeled as a blocking change. I think not many people is using this (since passive event support is almost ubiquituos) and the main purpose of the polyfill was to being used inside the composable itself, but it's a change regardless. Thoughts?

As I indicated in my commit message:

Since Vue 2 support has been dropped already, and all browsers supporting Proxy (requirement imposded by Vue 3) already has passive event support, having this polyfill is unnecessary and we can assume support.

Also, in some other places, passive event handlers were being used already.