Last week a special section has been opened for annual partners of Minsitry of Testing. Mabl is one of them. You could pose questions over there:
Let me rephrase your problem in my own words.
You tried to automate GUI test of a React application. Uptil now you ran twice into a single selector problem. What you are looking for, is the right tool(s) which can solve this problem. At the moment you are looking at an AI solution.
My gut feeling is to consider Cypress. I once had a small introduction and it looked good. In the JavaScript front end automation it is frequently used.
You could even follow the free introduction course on Test Automation University.