fix(tasks): task compose close button fix

[sedson]

Summary

Screenshots, GIFs, and Videos

[github-actions]

Preview: https://seamus-fix-task-compose-close--vjn7dk.preview.macro.com/app (d0d4db1)

[claude]

Code review

Missing test coverage for bug fix

File: js/app/packages/block-md/component/ComposeTask.tsx

This PR fixes a bug with the task compose close button, but no tests were added to verify the fix or prevent regression.

According to CLAUDE.md line 11:

Testing - Write tests for your changes. When fixing bugs or regressions, identify the issue with a test before fixing it.

Consider adding tests that:

1. Verify the split panel closes correctly when creating a task without "create more"
2. Verify the split panel closes when handleClose is called
3. Ensure the close button works in all scenarios (popover and non-popover contexts)

Changed code:

macro/js/app/packages/block-md/component/ComposeTask.tsx

Lines 412 to 415 in affb80b

	if (!createMore()) {
	splitPanel.handle.close();
	props.onCreateTask?.(taskTitle, taskContent);
	props.onClose?.();