[FIR] Add isVisible check to resolveRootPartOfQualifier

compiler/fir/resolve/src/org/jetbrains/kotlin/fir/QualifiedNameResolution.kt

@@ -47,6 +47,17 @@ fun BodyResolveComponents.resolveRootPartOfQualifier(
     for (scope in createCurrentScopeList()) {
         scope.getSingleClassifier(name)?.let {
             if (it is FirRegularClassSymbol) {
+                val isVisible = session.visibilityChecker.isVisible(
+                    it.fir,
+                    session,
+                    file,
+                    containingDeclarations,
+                    null,
+                    false,
+                )
+                if (!isVisible) {
+                    return@let
+                }
                 val classId = it.classId
                 return buildResolvedQualifier {
                     this.source = source

compiler/testData/diagnostics/tests/imports/InaccessiblePrivateInFile.kt

@@ -3,7 +3,9 @@
 // FILE: f11.kt
 package api
 
-interface ApplicabilityResult
+interface ApplicabilityResult {
+    object Inapplicable : ApplicabilityResult {}
+}
 
 // FILE: f12.kt
 package api
@@ -28,3 +30,10 @@ class NullArgumentMapping : ArgumentMapping {
     override fun highlightingApplicabilities(): ApplicabilityResult = object : ApplicabilityResult {
     }
 }
+
+class PositionalArgumentMapping : ArgumentMapping {
+    // The return type is now resolved properly v
+    override fun highlightingApplicabilities(): ApplicabilityResult =
+        // However, here v we still have a problem
+        ApplicabilityResult.Inapplicable
+}

compiler/testData/diagnostics/tests/imports/InaccessiblePrivateInFile.txt

@@ -7,6 +7,13 @@ package api {
         public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
         public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
         public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+
+        public object Inapplicable : api.ApplicabilityResult {
+            private constructor Inapplicable()
+            public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+            public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+            public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+        }
     }
 
     public interface ArgumentMapping {
@@ -39,5 +46,13 @@ package impl {
         public open override /*1*/ fun highlightingApplicabilities(): api.ApplicabilityResult
         public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
     }
+
+    public final class PositionalArgumentMapping : api.ArgumentMapping {
+        public constructor PositionalArgumentMapping()
+        public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+        public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+        public open override /*1*/ fun highlightingApplicabilities(): api.ApplicabilityResult
+        public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    }
 }