CommandeFournisseur::getTooltipContentArray() already adds a "Supplier"
line (thirdparty getNomUrl) to the getNomUrl tooltip, but
FactureFournisseur and SupplierProposal do not. Hovering a supplier
invoice or supplier proposal link therefore never shows which thirdparty
it belongs to, an inconsistency between three otherwise-similar objects.
Align both with CommandeFournisseur: add the same $datas['supplier']
entry, right after RefSupplier, honoring the 'nofetch' param.
Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>