New feature. Continue adding or updating a document after tax calculation error or warnings.

• There are some situations, like when a document tax line is already closed, but the user still wants to update some documents fields and the calculation is set to automatic.
• Previously in this scenario the add-on will show the error and stop the update/add process.
• Now a prompt message let the user decide if still want to complete the data event despite the Avatax validation message.