[FIR IDE] Fix invalid status for class symbols

idea/idea-frontend-fir/src/org/jetbrains/kotlin/idea/frontend/api/fir/symbols/KtFirNamedClassOrObjectSymbol.kt

@@ -8,6 +8,7 @@ package org.jetbrains.kotlin.idea.frontend.api.fir.symbols
 import com.intellij.psi.PsiElement
 import org.jetbrains.kotlin.descriptors.ClassKind
 import org.jetbrains.kotlin.descriptors.Modality
+import org.jetbrains.kotlin.descriptors.Visibilities
 import org.jetbrains.kotlin.descriptors.Visibility
 import org.jetbrains.kotlin.fir.declarations.*
 import org.jetbrains.kotlin.idea.fir.findPsi
@@ -47,9 +48,19 @@ internal class KtFirNamedClassOrObjectSymbol(
             fir.symbol.classId.takeUnless { it.isLocal }
         }
 
-    /* FirRegularClass modality and visibility does not modified by STATUS so it can be taken from RAW */
+    /* FirRegularClass modality does not modified by STATUS so it can be taken from RAW */
-    override val modality: Modality get() = getModality(FirResolvePhase.RAW_FIR, Modality.FINAL)
+    override val modality: Modality
-    override val visibility: Visibility get() = getVisibility(FirResolvePhase.RAW_FIR)
+        get() = getModality(
+            FirResolvePhase.RAW_FIR,
+            if (classKind == KtClassKind.INTERFACE) Modality.ABSTRACT else Modality.FINAL
+        )
+
+    /* FirRegularClass visibility are not modified by STATUS only for Unknown so it can be taken from RAW */
+    override val visibility: Visibility
+        get() = when (val possiblyRawVisibility = getVisibility(FirResolvePhase.RAW_FIR)) {
+            Visibilities.Unknown -> if (firRef.withFir { it.isLocal }) Visibilities.Local else Visibilities.Public
+            else -> possiblyRawVisibility
+        }
 
     override val annotations: List<KtAnnotationCall> by cached { firRef.toAnnotationsList() }
     override fun containsAnnotation(classId: ClassId): Boolean = firRef.containsAnnotation(classId)
@@ -59,7 +70,7 @@ internal class KtFirNamedClassOrObjectSymbol(
     override val isData: Boolean get() = firRef.withFir { it.isData }
     override val isInline: Boolean get() = firRef.withFir { it.isInline }
     override val isFun: Boolean get() = firRef.withFir { it.isFun }
-    override val isExternal: Boolean get() = firRef.withFir{ it.isExternal }
+    override val isExternal: Boolean get() = firRef.withFir { it.isExternal }
 
     override val companionObject: KtFirNamedClassOrObjectSymbol? by firRef.withFirAndCache { fir ->
         fir.companionObject?.let { builder.classifierBuilder.buildNamedClassOrObjectSymbol(it) }