This update improves how Odoo renders several website and expense templates, reducing errors caused by option formatting differences. It also makes related error messages clearer, helping support teams diagnose issues faster when pages or reports fail to display correctly.

This fixes how monetary amounts are stored so they keep the correct number of decimal places without adding unnecessary extra digits. It helps avoid confusing or inflated-looking database values while preserving accurate currency calculations.

Add a class for float objects that carry their precision digits, use it for the
value of monetary fields in record cache, and serialize them as expected for
the database.