`github.copilot.chat.summarizeAgentConversationHistory.enabled` is not mentioned at the `Automatic compaction` section

[tamuratak]

The github.copilot.chat.summarizeAgentConversationHistory.enabled setting is not mentioned at the Automatic compaction section. When the setting is false, the automatic compaction is disabled.

• https://code.visualstudio.com/docs/copilot/chat/copilot-chat-context#_automatic-compaction
• https://github.com/microsoft/vscode-docs/blob/main/docs/copilot/reference/copilot-settings.md#agent-settings