Chaining non-prop 'pre' watchers

[skirtles-code]

Version

3.0.0-rc.5

Reproduction link

https://jsfiddle.net/skirtle/usymq9z0/2/

Steps to reproduce

1. Open the console.
2. Click the button.
3. Note that the chained 'pre' watcher logs after render.

What is expected?

The 'pre' watcher should log before render.

What is actually happening?

The new 'pre' watcher is added to the end of the queue and doesn't run until after rendering.

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This is very similar to #1777 except there are no props involved so the fix for that issue doesn't apply.

I have confirmed this problem exists on the latest master.

The example is just for illustration. In a 'real' application the count property might be in store state, making the use of a watcher significantly less contrived.

[yyx990803]

Fixed in 3692f27