[FIR] Beautify ::class expression rendering in annotation arguments

...in `ACTUAL_ANNOTATIONS_NOT_MATCH_EXPECT` diagnostic message.

^KT-62559

compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/diagnostics/FirExpectActualAnnotationIncompatibilityDiagnosticRenderers.kt

@@ -55,6 +55,7 @@ internal object FirExpectActualAnnotationIncompatibilityDiagnosticRenderers {
             referencedSymbolRenderer = FirIdRendererBasedSymbolRenderer(),
             resolvedNamedReferenceRenderer = FirResolvedNamedReferenceRenderer(),
             resolvedQualifierRenderer = FirResolvedQualifierRenderer(),
+            getClassCallRenderer = FirGetClassCallRendererForReadability(),
         ).renderElementAsString(ann, trim = true)
     }
 }

compiler/fir/tree/src/org/jetbrains/kotlin/fir/renderer/FirGetClassCallRendererForReadability.kt

@@ -0,0 +1,15 @@
+/*
+ * Copyright 2010-2023 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.fir.renderer
+
+import org.jetbrains.kotlin.fir.expressions.FirGetClassCall
+
+class FirGetClassCallRendererForReadability : FirGetClassCallRenderer() {
+    override fun render(getClassCall: FirGetClassCall) {
+        getClassCall.argument.accept(components.visitor)
+        components.printer.print("::class")
+    }
+}

compiler/testData/diagnostics/tests/multiplatform/actualAnnotationsNotMatchExpect/annotationArgRendering.ll.kt

@@ -26,4 +26,4 @@ actual fun <!ACTUAL_ANNOTATIONS_NOT_MATCH_EXPECT("fun stringConcat(): Unit; fun
 // Not reported in K1, because supported starting from K2
 actual fun <!ACTUAL_ANNOTATIONS_NOT_MATCH_EXPECT("fun onType(): @Ann2(...) Any?; fun onType(): Any?; Annotation `@Ann2(s = String())` is missing on actual declaration")!>onType<!>(): Any? = null
 
-actual fun <!ACTUAL_ANNOTATIONS_NOT_MATCH_EXPECT("fun kclassArg(): Unit; fun kclassArg(): Unit; Annotation `@Ann3(kclass = <getClass>(String))` is missing on actual declaration")!>kclassArg<!>() {}
+actual fun <!ACTUAL_ANNOTATIONS_NOT_MATCH_EXPECT("fun kclassArg(): Unit; fun kclassArg(): Unit; Annotation `@Ann3(kclass = String::class)` is missing on actual declaration")!>kclassArg<!>() {}