bt_gatt_write_without_response_cb doesn't use callback

[PavelVPV]

Describe the bug
Seems like in this PR #44269 bt_gatt_write_without_response_cb was refactored so that it doesn't use func callback anymore. This brakes some mesh functionality which relies on the callback.

[hermabe]

Looks like an oversight on my part. Does adding this line fix the issue?

bt_att_set_tx_meta_data(buf, func, user_data);

Commit with potential fix: hermabe@01ca4e3

[PavelVPV]

Yes, it works, checked on latest main. Thanks!