[MA-28]: MM-61603: Ensure custom controls provide proper name, role, and state information

[SaurabhSharma-884]

Summary

This PR adds provides proper name, role, and state information to custom controls in message post priority dialog-Standard, Important and Urgent buttons

Steps to reproduce

• Navigate to the Message priority button and select it.
• Now navigate to the Standard button.
• Notice that the state of the element is not programatically implemented.

Ticket Link

Fixes: https://mattermost.atlassian.net/browse/MM-61603

Screenshots

Release Note

[github-actions]

⚠️ One or more flaky tests detected ⚠️

• Failing job: github.com/mattermost/mattermost:Postgres with binary parameters
• Double check your code to ensure you haven't introduced a flaky test.
• If this seems to be unrelated to your changes, submit a separate pull request to skip the flaky tests (e.g. 23360) and file JIRA ticket (e.g. MM-52743) for later investigation.

Test	Retries
Postgres with binary parameters (Results)
com/mattermost/mattermost/server/v8/channels/api4.TestGetOAuthApp	1

[github-actions]

⚠️ One or more flaky tests detected ⚠️

• Failing job: github.com/mattermost/mattermost:MySQL
• Double check your code to ensure you haven't introduced a flaky test.
• If this seems to be unrelated to your changes, submit a separate pull request to skip the flaky tests (e.g. 23360) and file JIRA ticket (e.g. MM-52743) for later investigation.

Test	Retries
MySQL (Results)
com/mattermost/mattermost/server/v8/channels/api4.TestPublishUserTyping/should_send_typing_event_via_websocket_when_triggering_a_typing_event_for_a_user_with_a_common_channel	1
com/mattermost/mattermost/server/v8/channels/api4.TestPublishUserTyping	1