[AA FIR] KT-58503 Use resolvedStatus to access modality only in case of Status Transformers present

ATM unconditional `resolvedStatus` call in `modality` causes a
performance degradation in our completion tests

Since `resolvedStatus` is called to make sure that all the
status-transforming compiler plugins had finished their job, it doesn't
make sense to call `resolvedStatus` if there are no such compiler
plugins registered

N.B. After KT-56551 is fixed, this optimization might become obsolete
and can be removed if proved so

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

@@ -20,7 +20,10 @@ import org.jetbrains.kotlin.analysis.api.symbols.markers.KtSymbolKind
 import org.jetbrains.kotlin.descriptors.Modality
 import org.jetbrains.kotlin.descriptors.Visibilities
 import org.jetbrains.kotlin.descriptors.Visibility
+import org.jetbrains.kotlin.fir.declarations.FirDeclarationStatus
 import org.jetbrains.kotlin.fir.declarations.utils.*
+import org.jetbrains.kotlin.fir.extensions.extensionService
+import org.jetbrains.kotlin.fir.extensions.statusTransformerExtensions
 import org.jetbrains.kotlin.fir.symbols.impl.FirRegularClassSymbol
 import org.jetbrains.kotlin.name.ClassId
 import org.jetbrains.kotlin.name.Name
@@ -39,7 +42,7 @@ internal class KtFirNamedClassOrObjectSymbol(
 
     override val modality: Modality
         get() = withValidityAssertion {
-            firSymbol.modality
+            firSymbol.optionallyResolvedStatus.modality
                 ?: when (classKind) { // default modality
                     KtClassKind.INTERFACE -> Modality.ABSTRACT
                     else -> Modality.FINAL
@@ -88,4 +91,21 @@ internal class KtFirNamedClassOrObjectSymbol(
         }
 
     override val symbolKind: KtSymbolKind get() = withValidityAssertion { getSymbolKind() }
+
+    /**
+     * We can use [FirRegularClassSymbol.rawStatus] to avoid unnecessary resolve unless there are status transformers present.
+     * If they are present, we have to resort to [FirRegularClassSymbol.resolvedStatus] instead - otherwise we can observe incorrect status
+     * properties.
+     *
+     * TODO This optimization should become obsolete after KT-56551 is fixed.
+     */
+    private val FirRegularClassSymbol.optionallyResolvedStatus: FirDeclarationStatus
+        get() = if (statusTransformersPresent) {
+            resolvedStatus
+        } else {
+            rawStatus
+        }
+
+    private val statusTransformersPresent: Boolean
+        get() = analysisSession.useSiteSession.extensionService.statusTransformerExtensions.isNotEmpty()
 }