* Test: add unit tests for TTC unit price rounding (#37658)
Covers the "unit price entered including tax" workflow (subtotal title, product
line, free line, no-op update, discount on all lines) for sale/purchase objects,
checking totals and that each line keeps its typed TTC value (subprice_ttc).
* Test - Make TTC rounding test portable across versions (guard subtotal step with method_exists)
* Test - Use non-deprecated module names in isModEnabled (order/invoice/contract)
* Fix#37658 Persist TTC unit price entry mode on order/invoice/contract and supplier proposal
A line entered with the unit price including tax keeps its typed value (subprice_ttc) and
computes totals from it, avoiding a 0.01 rounding drift on create, no-op edit and bulk actions.
Moves wasEnteredIncludingTax() to CommonObjectLine.
* Cast unit price to float on supplier proposal updateline (phan)
* FIX#37658 Preserve TTC unit price entry mode on clone (createFromClone)
* Pass socid (not object id) to SupplierProposal::createFromClone in TTC clone test
* Preserve TTC unit price entry mode on origin conversion and credit note
* Fix phan: cast pu_ht to float for Contrat::defineBuyPrice() argument
* Preserve TTC unit price entry mode on supplier order, invoice and proposal (socle, clone, conversion, line edit and bulk actions)
* Fix cast ht to float for CommandeFournisseur::updateline() argument
* Fix cast subprice_ttc to float in ContratLigne::update SQL (phan SqlInjection)
* Add TTC round-of-total stability tests
Cover MAIN_ROUNDOFTOTAL_NOT_TOTALOFROUND=1 (and _SUPPLIER=1) on fresh
customer and supplier objects with mixed HT/TTC lines: create, no-op,
clone and discount must not drift and must keep the entry mode.
* Preserve TTC entry mode when creating a contract from origin
* Add getPriceBaseType() and preserve TTC entry mode on proposal from origin
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Co-authored-by: Laurent Destailleur <eldy@destailleur.fr>
