fix: Add null check for utils.getMorePropsForChart

[mm0]

When using the FibonacciRetracements component, I get an exception:

utils.ts:77 Uncaught TypeError: Cannot read properties of undefined (reading 'find')
    at getMorePropsForChart (utils.ts:77:1)
    at DrawingObjectSelector.tsx:39:1
    at index.ts:150:1
    at Array.forEach (<anonymous>)
    at mapObject (index.ts:148:1)
    at DrawingObjectSelector.getInteraction (DrawingObjectSelector.tsx:32:1)
    at DrawingObjectSelector.handleClick [as onMouseDown] (DrawingObjectSelector.tsx:67:1)
    at GenericComponent.evaluateType (GenericComponent.tsx:160:1)
    at GenericComponent.listener (GenericComponent.tsx:118:1)
    at ChartCanvas.tsx:911:1

In other places in the source code, I see that there is usually an explicit check for the chartConfig property. I have copied that here in utils.tsx

Checklist

• My commits follow Conventional Commits
• documentation is updated