All errors for existing fields have been detected and suppressed with a
`!` assertion.
Issue/24571 is tracking proper clean up of those instances.
One-line change required in ivy/compilation.ts, because it appears that
the new syntax causes tsickle emitted node to no longer track their
original sourceFiles.
PR Close#24572
This reverts commit c569b7524974200040c2abae6923cd4e6f59a13b.
As it was synched together with 5a9ed2de272912ac74ed56bfec4bdf4551f7b38e
which broke an internal test.
