Preserve line base price precision in UBL XML generation

[Copilot]

Some monetary fields should not be normalized to 2 decimals; line base price (cbc:PriceAmount) must retain the provided precision. This change removes forced .toFixed(2) formatting for line price while keeping existing 2-decimal formatting behavior for other amount fields.

• Formatting behavior change

  • Updated invoice/credit note line XML generation to serialize cac:Price/cbc:PriceAmount using the raw numeric string value (String(line.price)) instead of forcing two decimals.

• Coverage added

  • Added builder test cases for both invoice and credit note flows to assert high-precision line prices are emitted unchanged (e.g. 10.129).

'cbc:PriceAmount': {
  '#text': String(line.price),
  ...XMLAttributes({ currencyID: line.currency }),
}

[codacy-production]

Up to standards ✅

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