DocGen 26_1: Chat: sendButtonOptions

[vladaskorohodova]

Requires:

• Chat: Add sendButtonOptions to .d.ts DevExtreme#33122

[Copilot]

Pull request overview

This PR updates the DevExtreme documentation metadata and adds new API reference topics generated by DocGen for the dxChat send button customization surface.

Changes:

• Added syntax mapping entries for dxChat send button-related types/options/events in metadata/syntax-data.json.
• Introduced new API reference topics for sendButtonOptions, SendButtonProperties, SendButtonClickEvent, and Enums.SendButtonAction.

Reviewed changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
metadata/syntax-data.json	Adds framework syntax mappings for SendButtonClickEvent, sendButtonOptions, SendButtonProperties, and SendButtonAction.
api-reference/NewTopics/SendButtonProperties/SendButtonProperties.md	New type topic stub for SendButtonProperties.
api-reference/NewTopics/SendButtonProperties/action.md	New property topic stub for SendButtonProperties.action (enum-based).
api-reference/NewTopics/SendButtonProperties/icon.md	New property topic stub for SendButtonProperties.icon (default icon).
api-reference/NewTopics/SendButtonProperties/onClick.md	New callback topic stub for SendButtonProperties.onClick.
api-reference/NewTopics/_ui_chat_SendButtonClickEvent/_ui_chat_SendButtonClickEvent.md	New event type topic stub for SendButtonClickEvent.
api-reference/10 UI Components/dxChat/1 Configuration/sendButtonOptions.md	New dxChat.Options.sendButtonOptions configuration topic stub.
api-reference/_hidden/Enums/SendButtonAction.md	New enum topic stub for SendButtonAction.

[Copilot]

The front matter for this callback option is missing a documented default value and uses type: function(e) only. In this repo, event/callback options typically include a default: and often document | undefined (for example, dxChat.Options.onTypingEnd uses type: function(e) | undefined + default: undefined, and dxButton.Options.onClick includes default: null). Please align this topic’s front matter with the established pattern by adding the correct default and (if applicable) updating the type to include | undefined to match the actual API behavior.

Suggested change

	type: function(e)
	type: function(e) | undefined
	default: undefined