extensionsHook function is not being invoked due problem in RedocNormalizedOptions constructor

[NXTaar]

Hi
I was trying to use extensionsHook function in theme object but it never was invoked.
I figured out the reason.

The main problem in this piece of code
https://github.com/Rebilly/ReDoc/blob/8f7fccc6576c43518c13c4a95ca52302ab544542/src/services/RedocNormalizedOptions.ts#L131-L136

RedocNormalizedOptions is invoked three times

• first time here
  https://github.com/Rebilly/ReDoc/blob/fec4605115d20f92de808ade4b9ead069f198c08/src/components/OptionsProvider.ts#L5
  I suppose it's some default initialisation
• second time here
  https://github.com/Rebilly/ReDoc/blob/fec4605115d20f92de808ade4b9ead069f198c08/src/components/RedocStandalone.tsx#L43-L52
  And that’s the heart of the matter. All context providing components are initialized inside <Redoc /> component and you don't have the needed theme information for the loader. So you do the individual invoke of the RedocNormalizedOptions here to get the info for the <Loading/> component.
  During that invoke this magic line does it's trick
  https://github.com/Rebilly/ReDoc/blob/8f7fccc6576c43518c13c4a95ca52302ab544542/src/services/RedocNormalizedOptions.ts#L133
  It overrides original options object provided in the props of the <RedocStandalone/>!!!
• and here goes the third time
  https://github.com/Rebilly/ReDoc/blob/8f7fccc6576c43518c13c4a95ca52302ab544542/src/services/AppStore.ts#L70
  The UI components that are using extensionsHook function (f.e. <ApiHeader/>) are getting options exactly from this normalization invoke, but the theme.extensionsHook property is already set to undefined in the second invoke of the RedocNormalizedOptions for the loader, so this condition raw.theme && raw.theme.extensionsHook will return false and resulting options object provided in the store prop in <Redoc> will always contain property theme.extensionsHook being set to undefined