gnucash stable: Improve GncNumeric(std::string) to handle unicode spaces.

[John Ralls]

Updated	 via  https://github.com/Gnucash/gnucash/commit/0e15e12e (commit)
	from  https://github.com/Gnucash/gnucash/commit/1fa4f71f (commit)



commit 0e15e12ea98d9231b6f4ae2109f477d0f8fd70eb
Author: John Ralls <jralls at ceridwen.us>
Date:   Fri Mar 7 13:19:10 2025 -0800

    Improve GncNumeric(std::string) to handle unicode spaces.



Summary of changes:
 libgnucash/engine/gnc-numeric.cpp            | 10 +++++++---
 libgnucash/engine/test/gtest-gnc-numeric.cpp |  4 ++--
 2 files changed, 9 insertions(+), 5 deletions(-)