Revert "improve worktree creation progress (#1869)"

This reverts commit f1da07e.

Author: lszomoru

src/extension/chatSessions/vscode-node/copilotCLIChatSessionsContribution.ts

@@ -42,19 +42,17 @@ export class CopilotCLIWorktreeManager {
 			return undefined;
 		}
 
-		await stream.progress(vscode.l10n.t('Creating isolated worktree for session...'), async (progress) => {
-			try {
-				const worktreePath = await vscode.commands.executeCommand('git.createWorktreeWithDefaults') as string | undefined;
-				if (worktreePath) {
-					return vscode.l10n.t('Created isolated worktree at {0}', worktreePath);
-				} else {
-					progress.report(new vscode.ChatResponseWarningPart(vscode.l10n.t('Failed to create worktree for isolation, using default workspace directory')));
-				}
-			} catch (error) {
-				progress.report(new vscode.ChatResponseWarningPart(vscode.l10n.t('Error creating worktree for isolation: {0}', error instanceof Error ? error.message : String(error))));
+		try {
+			const worktreePath = await vscode.commands.executeCommand('git.createWorktreeWithDefaults') as string | undefined;
+			if (worktreePath) {
+				stream.progress(vscode.l10n.t('Created isolated worktree at {0}', worktreePath));
+				return worktreePath;
+			} else {
+				stream.warning(vscode.l10n.t('Failed to create worktree for isolation, using default workspace directory'));
 			}
-		});
-
+		} catch (error) {
+			stream.warning(vscode.l10n.t('Error creating worktree for isolation: {0}', error instanceof Error ? error.message : String(error)));
+		}
 		return undefined;
 	}