[Bug Report] In the source code, <mt checklist :value="option. Value || option"> returns not value when value is 0, which is the option value.i want to get 0 value

### Mint UI version
2.2.13

### OS/Browsers version
win 7

### Vue version
2.5.16

### Reproduction Link
[http://mint-ui.github.io/docs/#/zh-cn2/checklist](http://mint-ui.github.io/docs/#/zh-cn2/checklist)

### Steps to reproduce
In the source code, returns not value when value is 0, which is the option value.i want to get 0 value

### What is Expected?
In the source code, returns not value when value is 0, which is the option value.i want to get 0 value

### What is actually happening?
In the source code, returns not value when value is 0, which is the option value.i want to get 0 value

Start with the checklist component linked in the reproduction page and inspect the source handling of option values. Reproduce the case with an option value of 0, then verify that the checklist preserves 0 rather than falling back to the option object or label.

Written by the indexing model from the issue text.