DDC excludes some SDK libraries when building the platform in the sdk_nnbd fork

[nshahan]

We are temporarily building a smaller SDK platform to make progress building applications against the forked sdk_nnbd sources. This is because some of the libraries have not yet been ported and they don't compose well.

This is a tracking issue that we can close once all of these excluded libraries have been added back into the SDK that we build applications/tests against.

• dart:developer
• dart:io
• dart:isolate
• dart:indexed_db
• dart:html
• dart:html_common
• dart:svg
• dart:web_audio
• dart:web_gl
• dart:web_sql

[sigmundch]

Most are now included at this time (once https://dart-review.googlesource.com/c/sdk/+/133869 lands), only missing dart:io