[FIR] Add NON_INTERNAL_PUBLISHED_API diagnostic

idea/idea-frontend-fir/src/org/jetbrains/kotlin/idea/frontend/api/fir/diagnostics/KtFirDataClassConverters.kt

@@ -3179,6 +3179,12 @@ internal val KT_DIAGNOSTIC_CONVERTER = KtDiagnosticConverterBuilder.buildConvert
             token,
         )
     }
+    add(FirErrors.NON_INTERNAL_PUBLISHED_API) { firDiagnostic ->
+        NonInternalPublishedApiImpl(
+            firDiagnostic as FirPsiDiagnostic,
+            token,
+        )
+    }
     add(FirErrors.REIFIED_TYPE_PARAMETER_IN_OVERRIDE) { firDiagnostic ->
         ReifiedTypeParameterInOverrideImpl(
             firDiagnostic as FirPsiDiagnostic,

idea/idea-frontend-fir/src/org/jetbrains/kotlin/idea/frontend/api/fir/diagnostics/KtFirDiagnostics.kt

@@ -2218,6 +2218,10 @@ sealed class KtFirDiagnostic<PSI : PsiElement> : KtDiagnosticWithPsi<PSI> {
         override val diagnosticClass get() = OverrideByInline::class
     }
 
+    abstract class NonInternalPublishedApi : KtFirDiagnostic<KtElement>() {
+        override val diagnosticClass get() = NonInternalPublishedApi::class
+    }
+
     abstract class ReifiedTypeParameterInOverride : KtFirDiagnostic<KtElement>() {
         override val diagnosticClass get() = ReifiedTypeParameterInOverride::class
     }

idea/idea-frontend-fir/src/org/jetbrains/kotlin/idea/frontend/api/fir/diagnostics/KtFirDiagnosticsImpl.kt

@@ -3581,6 +3581,13 @@ internal class OverrideByInlineImpl(
     override val firDiagnostic: FirPsiDiagnostic by weakRef(firDiagnostic)
 }
 
+internal class NonInternalPublishedApiImpl(
+    firDiagnostic: FirPsiDiagnostic,
+    override val token: ValidityToken,
+) : KtFirDiagnostic.NonInternalPublishedApi(), KtAbstractFirDiagnostic<KtElement> {
+    override val firDiagnostic: FirPsiDiagnostic by weakRef(firDiagnostic)
+}
+
 internal class ReifiedTypeParameterInOverrideImpl(
     firDiagnostic: FirPsiDiagnostic,
     override val token: ValidityToken,