K2: use lookupTag instead of classId in use-site scopes

We used this classId to get an associated symbol,
but this way is anyway not recommended (e.g. problems with local classes).
In this commit we migrated to usage of lookup tags instead.

compiler/fir/java/src/org/jetbrains/kotlin/fir/java/scopes/JavaClassUseSiteMemberScope.kt

@@ -27,7 +27,7 @@ import org.jetbrains.kotlin.fir.java.syntheticPropertiesStorage
 import org.jetbrains.kotlin.fir.java.symbols.FirJavaOverriddenSyntheticPropertySymbol
 import org.jetbrains.kotlin.fir.java.toConeKotlinTypeProbablyFlexible
 import org.jetbrains.kotlin.fir.resolve.defaultType
-import org.jetbrains.kotlin.fir.resolve.providers.toSymbol
+import org.jetbrains.kotlin.fir.resolve.toSymbol
 import org.jetbrains.kotlin.fir.scopes.*
 import org.jetbrains.kotlin.fir.scopes.impl.AbstractFirUseSiteMemberScope
 import org.jetbrains.kotlin.fir.scopes.impl.FirTypeIntersectionScopeContext.ResultOfIntersection
@@ -55,7 +55,7 @@ class JavaClassUseSiteMemberScope(
     superTypeScopes: List<FirTypeScope>,
     declaredMemberScope: FirContainingNamesAwareScope
 ) : AbstractFirUseSiteMemberScope(
-    klass.classId,
+    klass.symbol.toLookupTag(),
     session,
     JavaOverrideChecker(session, klass.javaTypeParameterStack, superTypeScopes, considerReturnTypeKinds = true),
     superTypeScopes,
@@ -343,7 +343,7 @@ class JavaClassUseSiteMemberScope(
 
     private fun FirNamedFunctionSymbol.createSuspendView(): FirSimpleFunction? {
         val continuationParameter = fir.valueParameters.lastOrNull() ?: return null
-        val owner = classId.toSymbol(session)?.fir as? FirJavaClass ?: return null
+        val owner = ownerClassLookupTag.toSymbol(session)?.fir as? FirJavaClass ?: return null
         val continuationParameterType = continuationParameter
             .returnTypeRef
             .resolveIfJavaType(session, owner.javaTypeParameterStack)
@@ -824,6 +824,6 @@ class JavaClassUseSiteMemberScope(
     }
 
     override fun toString(): String {
-        return "Java use site scope of $classId"
+        return "Java use site scope of ${ownerClassLookupTag.classId}"
     }
 }