[FIX] account.move.line: restore compatibility with RPC calls
[FIX] account.move.line: restore compatibility with RPC calls

Rev. d6e1d41128c126071d697220f1c83495d6cabc71 removed old API
compatibility layer, but failed to preserve the ability to
call certain public methods from the RPC layer, when extra
browse_record parameters were required.

In particular the @api.v7 version of
`prepare_move_lines_for_reconciliation_widget` was dropped
and there was no way to call it with a `target_currency` RPC
parameter anymore.

hip-odoo/odoo,ygol/odoo,dfang/odoo,ygol/odoo,ygol/odoo,dfang/odoo,dfang/odoo,hip-odoo/odoo,hip-odoo/odoo,dfang/odoo,hip-odoo/odoo,dfang/odoo,hip-odoo/odoo,hip-odoo/odoo,ygol/odoo,dfang/odoo,ygol/odoo,ygol/odoo,ygol/odoo