- Clean up the SPA project (removed dead code)
- Fixed URLs in override file

According to https://github.com/dotnet/runtime/issues/65396, using a new JsonSerializerOptions every time JsonSerializer is invoked is a suboptimal pattern.

Fix this by caching JsonSerializerOptions instances.

- This avoids the extra process hop

- It will eventually replace envoy

Bumps [webpack](https://github.com/webpack/webpack) from 5.75.0 to 5.76.0.
- [Release notes](https://github.com/webpack/webpack/releases)
- [Commits](https://github.com/webpack/webpack/compare/v5.75.0...v5.76.0)

---
updated-dependencies:
- dependency-name: webpack
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <support@github.com>