[FIR] Unwrap vararg array types for diagnostic rendering

#KT-65770 Fixed

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

@@ -42,7 +42,7 @@ object FirDiagnosticRenderers {
                 propertyAccessorRenderer = null,
                 callArgumentsRenderer = FirCallNoArgumentsRenderer(),
                 modifierRenderer = FirPartialModifierRenderer(),
-                valueParameterRenderer = FirValueParameterRendererNoDefaultValue(),
+                valueParameterRenderer = FirValueParameterRendererForReadability(),
                 declarationRenderer = FirDeclarationRenderer("local "),
                 annotationRenderer = FirAnnotationRendererForReadability(),
                 lineBreakAfterContextReceivers = false,

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

@@ -25,7 +25,7 @@ internal object FirExpectActualAnnotationIncompatibilityDiagnosticRenderers {
             annotationRenderer = null,
             modifierRenderer = null,
             contractRenderer = null,
-            valueParameterRenderer = FirValueParameterRendererNoDefaultValue(),
+            valueParameterRenderer = FirValueParameterRendererForReadability(),
         ).renderElementAsString(it.fir, trim = true)
             // Write property accessors on the same line as the property
             .run { replace(Printer.LINE_SEPARATOR, "") }