Inline entity in external schema (#6615)
Inline entity in external schema (#6615)

Tests some edge cases in parsing and type checking schemas containing inline schemas.

CC: @piotrswigon

Closes #6615

COPYBARA_INTEGRATE_REVIEW=https://github.com/polymerlabs/arcs/pull/6615 from Cypher1:inlineEntityInExternalSchema b22d625ff4092b3337beef417644b8ff5db17bfd
PiperOrigin-RevId: 344183580

PolymerLabs/arcs,PolymerLabs/arcs,PolymerLabs/arcs,PolymerLabs/arcs,PolymerLabs/arcs,PolymerLabs/arcs,PolymerLabs/arcs,PolymerLabs/arcs