Enable default blazor error handler #15002
Description
Blazor Wasm already have a default error handler. If application couldn't be initialized, the following error view will be displayed. It can be customized via CSS in themes, this PR adds only default view, themes will customize it when necessary.
Resolves #14990
TODO: Describe what this PR has changed, add screenshot or animated GIF if available, write if it is a breaking change, and how to fix the breaking changes for existing applications if so.
Checklist
- I fully tested it as developer / designer and created unit / integration tests
- I documented it (or no need to document or I will create a separate documentation issue)
- I worked with the design team to get their idea for UI/UX design (or no need to design for this PR)
- I've assigned reviewer, related labels and set a milestone for this PR
How to test it?
- Run only Blazor application without running any HttpApi.Host project in app-pro or any other template