fix(useVModel): clone set to true triggered infinite loop

[motian]

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#3062

⚠️ 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

When set clone true, it triggered infinite loop

1. set property value of proxy.value will trigger watch proxy, and watch triggered emit
2. for the reason proxy value is a cloned data of props[key!], so watch props[key!] will triggered after step 1's emit
3. watch props[key!] will set proxy.value a new cloned data, it will triggered watch proxy again (step 1), then infinite loop happened

The problem was not mentioned directly in issue #3062, but mentioned in the issue comment by [Sevody]

 const formData = useVModel(props, 'modelValue', emit, {
    passive: true,
    deep: true,
    clone: true,
 });

Additional context

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🤖 Generated by Copilot at 81b4878

Improve useVModel performance and stability by avoiding redundant updates. Use a flag isUpdating to control the proxy value and the emit callback.

🤖 Generated by Copilot at 81b4878

• Prevent circular updates and unnecessary reactivity overhead for useVModel (link, link)

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[antfu]

Better use nextTick here

[motian]

Using nextTick instead of setTimeout is a better way. Thank you for your advice. I have already tested and changed the commit.

[freddieerg]

Is there any progress on this? Really should be fixed.

[freddieerg]

Bumping this, seems like an essential piece of functionality.