As an app developer I want descriptive warnings when I'm missing textResourceBindings

### Description

When developing an application, and my app is missing the expected `textResourceBindings` as should be defined in my form layout file, the app can in some circumstances end up with the dreaded 'unknown error occurred'. Instead of getting a show-stopping error message with a cryptic trace in the console, I'd rather have the frontend tell me which component is missing which key in `textResourceBinding`, in some way. Preferably directly in the UI, or at least in the browser console.

For some components where the binding key is optional, I'd possibly prefer a weaker warning/info message in the browser console telling me about this possible problem, without showing that warning in the app user interface.

### Additional Information

[Background/discussion on Slack](https://altinndevops.slack.com/archives/CDU1S3NLW/p1656407853828659)

### Tasks

_No response_

### Acceptance Criterias

_No response_

The issue names no files, tests, or entry points. Start by locating where frontend components resolve textResourceBindings and where missing bindings become the unknown error; done means missing required bindings identify the component and key, while optional bindings produce an appropriate console warning or info message.

Written by the indexing model from the issue text.