FIR: rename HIDDEN to INVISIBLE_REFERENCE

Some of them should be INVISIBLE_MEMBER though

idea/idea-frontend-fir/src/org/jetbrains/kotlin/idea/frontend/api/fir/diagnostics/KtFirDataClassConverters.kt

@@ -183,8 +183,8 @@ internal val KT_DIAGNOSTIC_CONVERTER = KtDiagnosticConverterBuilder.buildConvert
             token,
         )
     }
-    add(FirErrors.HIDDEN) { firDiagnostic ->
-        HiddenImpl(
+    add(FirErrors.INVISIBLE_REFERENCE) { firDiagnostic ->
+        InvisibleReferenceImpl(
             firSymbolBuilder.buildSymbol(firDiagnostic.a.fir as FirDeclaration),
             firDiagnostic as FirPsiDiagnostic<*>,
             token,

idea/idea-frontend-fir/src/org/jetbrains/kotlin/idea/frontend/api/fir/diagnostics/KtFirDiagnostics.kt

@@ -148,9 +148,9 @@ sealed class KtFirDiagnostic<PSI: PsiElement> : KtDiagnosticWithPsi<PSI> {
         override val diagnosticClass get() = DivisionByZero::class
     }
 
-    abstract class Hidden : KtFirDiagnostic<PsiElement>() {
-        override val diagnosticClass get() = Hidden::class
-        abstract val hidden: KtSymbol
+    abstract class InvisibleReference : KtFirDiagnostic<PsiElement>() {
+        override val diagnosticClass get() = InvisibleReference::class
+        abstract val reference: KtSymbol
     }
 
     abstract class UnresolvedReference : KtFirDiagnostic<PsiElement>() {

idea/idea-frontend-fir/src/org/jetbrains/kotlin/idea/frontend/api/fir/diagnostics/KtFirDiagnosticsImpl.kt

@@ -212,11 +212,11 @@ internal class DivisionByZeroImpl(
     override val firDiagnostic: FirPsiDiagnostic<*> by weakRef(firDiagnostic)
 }
 
-internal class HiddenImpl(
-    override val hidden: KtSymbol,
+internal class InvisibleReferenceImpl(
+    override val reference: KtSymbol,
     firDiagnostic: FirPsiDiagnostic<*>,
     override val token: ValidityToken,
-) : KtFirDiagnostic.Hidden(), KtAbstractFirDiagnostic<PsiElement> {
+) : KtFirDiagnostic.InvisibleReference(), KtAbstractFirDiagnostic<PsiElement> {
     override val firDiagnostic: FirPsiDiagnostic<*> by weakRef(firDiagnostic)
 }
 

idea/testData/checker/diagnosticsMessage/fullPackageFQNameOnVisiblityError.fir.kt

@@ -2,5 +2,5 @@
 
 package a.b
 
-<error descr="[HIDDEN] Symbol kotlin/internal/InlineOnly.InlineOnly is invisible">@kotlin.internal.InlineOnly</error>
+<error descr="[INVISIBLE_REFERENCE] Symbol kotlin/internal/InlineOnly.InlineOnly is invisible">@kotlin.internal.InlineOnly</error>
 inline fun foo() {}