Enable roaming of inflight chat requests (#213239)

This enables to remove the special handling for `/explain`

- fixes https://github.com/microsoft/vscode-copilot/issues/2192
- fixes https://github.com/microsoft/vscode/issues/208706 because inline chat now closes on "view in chat"
- fixes https://github.com/microsoft/vscode-copilot/issues/5288

src/vs/workbench/contrib/inlineChat/browser/inlineChatSessionServiceImpl.ts

@@ -154,7 +154,6 @@ export class InlineChatSessionServiceImpl implements IInlineChatSessionService {
 				return {
 					command: agentCommand.name,
 					detail: agentCommand.description,
-					refer: agentCommand.name === 'explain' // TODO@jrieken @joyceerhl this should be cleaned up
 				} satisfies IInlineChatSlashCommand;
 			})
 		};