MultiUsersSelectAction should have selected_users, not selected_user.

[Iruyan-Zak]

Description

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• bug
• enhancement (feature request)
• question
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• testing related
• discussion

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• I've read and understood the Contributing guidelines and have done my best effort to follow them.
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Bug Report

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Reproducible in:

package version:

node version:

OS version(s):

Steps to reproduce:

Receive action from multi-select menu with user list of Interactive Components.

(Jump this Block Kit Builder page and select users from the button in preview, then show payload:
https://api.slack.com/tools/block-kit-builder?mode=message&blocks=%5B%7B%22type%22%3A%22section%22%2C%22text%22%3A%7B%22type%22%3A%22mrkdwn%22%2C%22text%22%3A%22Pick%20one%20or%20more%20items%20from%20the%20list%22%7D%2C%22accessory%22%3A%7B%22action_id%22%3A%22text1234%22%2C%22type%22%3A%22multi_users_select%22%2C%22placeholder%22%3A%7B%22type%22%3A%22plain_text%22%2C%22text%22%3A%22Select%20users%22%7D%7D%7D%5D)

Expected result:

As well as other multi-select menu, the payload of action of multi-select menu with user list has plural form property name selected_users about selected items.

Actual result:

Current type definition of MultiUsersSelectAction has singular form property name selected_user.

Attachments:

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