gnucash stable: Multiple changes pushed

[Christopher Lam]

Updated	 via  https://github.com/Gnucash/gnucash/commit/985f5918 (commit)
	 via  https://github.com/Gnucash/gnucash/commit/7e740bab (commit)
	 via  https://github.com/Gnucash/gnucash/commit/23a2e091 (commit)
	from  https://github.com/Gnucash/gnucash/commit/754a1eb4 (commit)



commit 985f5918308dde01c408e07c7879e31d85e7cfd1
Author: Christopher Lam <christopher.lck at gmail.com>
Date:   Fri Jun 27 21:50:25 2025 +0800

    [Transaction.cpp] small modification to xaccTransSetNotes

commit 7e740babdfe374098db12ee6e04acb0fef073018
Author: Christopher Lam <christopher.lck at gmail.com>
Date:   Mon Jun 23 10:36:56 2025 +0800

    [Transaction.cpp] small modification to xaccTransSetReadOnly
    
    if reason is "" then remove the kvp

commit 23a2e091c740f78dba2ed7386d18bb8d3c908c20
Author: Christopher Lam <christopher.lck at gmail.com>
Date:   Sun Jun 22 13:47:16 2025 +0800

    [Transaction.cpp] use qof_instance kvp API for const char*



Summary of changes:
 libgnucash/engine/Transaction.cpp            | 173 +++++++--------------------
 libgnucash/engine/test/utest-Transaction.cpp |   8 +-
 2 files changed, 47 insertions(+), 134 deletions(-)