fix(compiler): properly report missing DI tokens

[pkozlowski-opensource]

Fixes #8245

[pkozlowski-opensource]

Hmm, for some reason tests are passing for me locally but not on Travis :-/

It is kind of tricky to write unit tests for this one since we need a situation where a given symbol / type is undefined without making TS complain.... In any case the issue is real and the fix is catching the problematic scenario...

Would appreciate a TS-guru giving me hand with the problematic test here....

[vicb]

@pkozlowski-opensource the issue looks like angular/tsickle#148 - should be solved in next tsickle release

/cc @mprobst

blocked on tscikle

[pkozlowski-opensource]

Thnx @vicb - it does indeed looks like a root cause / blocker.

[pkozlowski-opensource]

Actually we can reproduce the same issue without fiddling with interfaces so it is no longer blocked on tscikle. BrowserStack build is failing but it looks like a flake not related to this PR.

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