fix(runtime-core): disable deps collection in watch callbacks

[luwuer]

Close #2728

[edison1105]

I think this should also be handled
https://github.com/vuejs/vue-next/blob/8936e53b10a507b80ffc5b0ecaa6a1a0322f46cc/packages/runtime-core/src/apiWatch.ts#L230-L241

[luwuer]

Seems like that code executed synchronously does not have this problem because of code below:

https://github.com/vuejs/vue-next/blob/d87bc2b3b48dc3094f50e4a87227ddb09b8c7e38/packages/runtime-core/src/component.ts#L704-L711

[LinusBorg]

@edison1105 Thoughts on the last comment? Does that cover the case you mentioned?

[HcySunYang]

@edison1105 Thoughts on the last comment? Does that cover the case you mentioned?

@LinusBorg yes, that comment covers that case.

[yyx990803]

See d5824b9 - the tracking happens because the watcher callbacks are flushed during updateComponentPreRender, so it makes more sense for the tracking to be disabled there instead.