gnucash stable: Ensure incorrectly coded counter KVP is read correctly.

[John Ralls]

Updated	 via  https://github.com/Gnucash/gnucash/commit/6111184c (commit)
	from  https://github.com/Gnucash/gnucash/commit/7d566389 (commit)



commit 6111184c735f98da7b2f5dcf529f5660a16d6bb3
Author: John Ralls <jralls at ceridwen.us>
Date:   Fri May 26 21:24:06 2023 -0400

    Ensure incorrectly coded counter KVP is read correctly.
    
    Bug 798930 caused some counters to be saved as KVP double. If the
    correct int64_t value isn't found when reading, or if a double is
    encountered when loading the option dialog, get the double value
    and cast it to int64_t.



Summary of changes:
 libgnucash/engine/gnc-optiondb.cpp | 17 ++++++++++++++++-
 libgnucash/engine/qofbook.cpp      |  9 +++++++--
 2 files changed, 23 insertions(+), 3 deletions(-)