fix(ndt_scan_matcher): fix timestamp in service_ndt_align func

[YamatoAndo]

Description

The timestamp of /initialpose3d was always set to 0, so I investigated the cause and made the necessary fixes.

Related links

Parent Issue:

• Link

How was this PR tested?

Lsim works.

and check the timestamp of /initialpose3d.

ros2 topic echo /initialpose3d --field header

Notes for reviewers

None.

Interface changes

None.

Effects on system behavior

None.