sendTextMessage() for LWC for Lightning Experience

Sends a new text message from the agent to an end user. This method works only in Lightning console apps.

Arguments

Name	Type	Description
`recordId`	String	The ID of the record for the Messaging session.
`message`	Object	The `message` object with the message to send to the customer.

Name	Type	Description
`text`	String	The message to the customer. For example: `{ text: "This is a sample message." }`

Returns a Promise. Success resolves to true. The Promise is rejected if there’s an error.