fixup! 2/2 [FIR] Report all KotlinActual annotation usages in Kotlin.
diff --git a/compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/checkers/expression/FirKotlinActualAnnotationHasNoEffectInKotlinExpressionChecker.kt b/compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/checkers/expression/FirKotlinActualAnnotationHasNoEffectInKotlinExpressionChecker.kt
index def1ed0..d9811bf 100644
--- a/compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/checkers/expression/FirKotlinActualAnnotationHasNoEffectInKotlinExpressionChecker.kt
+++ b/compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/checkers/expression/FirKotlinActualAnnotationHasNoEffectInKotlinExpressionChecker.kt
@@ -20,6 +20,9 @@
 import org.jetbrains.kotlin.fir.types.resolvedType
 import org.jetbrains.kotlin.name.StandardClassIds
 
+/**
+ * Mental model: `KotlinActual` is annotated with `@kotlin.Deprecated(level = DeprecationLevel.ERROR)`
+ */
 sealed class FirKotlinActualAnnotationHasNoEffectInKotlinExpressionChecker<T : FirExpression> :
     FirExpressionChecker<T>(MppCheckerKind.Common) {
     object ResolvedQualifier : FirKotlinActualAnnotationHasNoEffectInKotlinExpressionChecker<FirResolvedQualifier>() {