[FIR] KT-54410: Report API_NOT_AVAILABLE for classifiers

Callable symbols with SinceKotlin are filtered out by a
resolution stage, but in K1 classifiers and property accessors
report API_NOT_AVAILABLE. K2 filters out properties with
unavailable accessors, but does nothing for classifiers.
This change fixes it.

^KT-54410 Fixed

compiler/frontend.common-psi/src/org/jetbrains/kotlin/diagnostics/LightTreePositioningStrategies.kt

@@ -619,6 +619,11 @@ object LightTreePositioningStrategies {
                 }
                 return super.mark(node, startOffset, endOffset, tree)
             }
+            if (node.tokenType == KtNodeTypes.IMPORT_DIRECTIVE) {
+                tree.collectDescendantsOfType(node, KtNodeTypes.REFERENCE_EXPRESSION).lastOrNull()?.let {
+                    return mark(it, it.startOffset, it.endOffset, tree)
+                }
+            }
             if (node.tokenType == KtNodeTypes.TYPE_REFERENCE) {
                 val typeElement = tree.findChildByType(node, KtTokenSets.TYPE_ELEMENT_TYPES)
                 if (typeElement != null) {

compiler/frontend.common-psi/src/org/jetbrains/kotlin/diagnostics/PositioningStrategies.kt

@@ -851,6 +851,10 @@ object PositioningStrategies {
                     is KtElement -> return mark(selectorExpression)
                 }
             }
+            if (element is KtImportDirective) {
+                element.alias?.nameIdentifier?.let { return mark(it) }
+                element.importedReference?.let { return mark(it) }
+            }
             if (element is KtTypeReference) {
                 element.typeElement?.getReferencedTypeExpression()?.let { return mark(it) }
             }