bug(platform, docs): strictTemplates errors

[platon-rov]

Is this a bug, enhancement, or feature request?

Bug.

Briefly describe your proposal.

Part of #7563.

When enabling strictTemplates & fullTemplateTypeCheck in base tsconfig there are many errors shown after compiling docs app.

The scope of this pr, errors found in files:

• libs/platform/**/*
• apps/docs/src/app/platform/**/*

There also will be breaking changes after the fixes, don't forged to list them in wiki.

Which versions of Angular and Fundamental Library for Angular are affected? (If this is a feature request, use current version.)

0.33.0-rc.275

If this is a bug, please provide steps for reproducing it.

1. Add to tsconfig.base.json

"angularCompilerOptions": {
  "fullTemplateTypeCheck": true,
  "strictTemplates": true
}

2. Try to serve docs app - ng serve.
3. See the errors.