Phase COMPILER_REQUIRED_ANNOTATIONS causes errors in the kotlinx serialization tests:
org.jetbrains.kotlin.fir.symbols.FirLazyResolveContractViolationException: `lazyResolveToPhase(COMPILER_REQUIRED_ANNOTATIONS)` cannot be called from a transformer with a phase COMPILER_REQUIRED_ANNOTATIONS.
`lazyResolveToPhase` can be called only from a transformer with a phase which is strictly greater than a requested phase;
i.e., `lazyResolveToPhase(A)` may be only called from a lazy transformer with a phase B, where A < B. This is a contract of lazy resolve
Properly set up dom-api-compat dependency for JS IR tests. Since this dependency is added
automatically for every Kotlin/JS library, it should be present during tests just as stdlib.
As a result, tests for serializable enums were changed since 1.6.0 runtime does not require enums to be explicitly serializable.
Sergey.Shanshin