Refactor "config" to be an actual config

### Is your feature request related to a problem? Please describe.

At the moment `config` is used as the default of all Ui Schema element `options`. However there are valid use cases where it should just serve as a configuration.

### Describe the solution you'd like

Refactor the current usage of `config` to be `defaultOptions` within `config`

### Describe alternatives you've considered

- Do not create `defaultOptions` but keep the `config` as is. In that case irrelevant form-wide options are merged into each renderer's options
- Introduce a new alternative prop

### Package

Core, React Bindings, React Material Renderers, React Vanilla Renderers, Angular Bindings, Angular Material Renderers, Vue Bindings, Vue Vanilla Renderers, Vue Vuetify Renderers

### Additional context

_No response_