Manually update query variables to trigger invoice preview query

What does this MR do and why?

This MR changes how invoice preview query is triggered to avoid potential infinite loops with the query due to changes in the properties that form the smart query variables for the query. The query variables are manually updated for any changes that require fetching invoice preview.

Related to #396813

Screenshots or screen recordings

Screen recordings can be found here.

How to set up and validate locally

Instructions can be found here.

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.