gnucash stable: Multiple changes pushed

[Christopher Lam]

Updated	 via  https://github.com/Gnucash/gnucash/commit/55496adc (commit)
	 via  https://github.com/Gnucash/gnucash/commit/c539f50b (commit)
	 via  https://github.com/Gnucash/gnucash/commit/45cccc79 (commit)
	from  https://github.com/Gnucash/gnucash/commit/4f655492 (commit)



commit 55496adc7ac2ec5ca40d9ad2b289a85a51859390
Merge: 4f655492ce c539f50b6e
Author: Christopher Lam <christopher.lck at gmail.com>
Date:   Fri Dec 19 12:46:01 2025 +0800

    Merge flywire branch 'Subtotal' into stable

commit c539f50b6e7aac44ff357f761f9626ed89c693fe
Author: flywire <flywire at gmail.com>
Date:   Wed Dec 10 21:55:34 2025 +1100

    Use trep-engine lowest shown grouping for detail

commit 45cccc79f12608aba6bf5b2bb978acc9cf558e18
Author: flywire <flywire0 at gmail.com>
Date:   Wed May 3 11:40:29 2023 +1000

    Only show Subtotal Prefix with Transactions
    
    If `Show subtotals only (hide transactional data)` is selected then the `Total For` prefix should not be shown.



Summary of changes:
 gnucash/report/trep-engine.scm | 72 ++++++++++++++++++++++++++++++------------
 1 file changed, 52 insertions(+), 20 deletions(-)