Can't get data from <transfer/> when using it in form.item

[ufoozhenghao]

• I have searched the issues of this repository and believe that this is not a duplicate.

Version

1.7.7

Environment

^2.6.14

Reproduction link

https://github.com/ufoozhenghao/transfer-issues-forked.git

Steps to reproduce

I create this.$emit('transfer',data) in transferDome.vue in Line119 and set v-decorator="['transfer',{valuePropName: 'keys', getValueFromEvent: 'transfer'},] in App.vue in Line5.
when i click submit, i received ’undefined‘ in console.log

What is expected?

When click 'Submit', I want get data(nextTargetKeys) from and show in form values and show in console

What is actually happening?

when i click submit, i received ’undefined‘ in console.log

[github-actions]

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