[FIR] Fix diagnostic message rendering for OVERRIDE_DEPRECATION

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

@@ -14,6 +14,7 @@ import org.jetbrains.kotlin.diagnostics.rendering.Renderers.commaSeparated
 import org.jetbrains.kotlin.fir.analysis.diagnostics.FirDiagnosticRenderers.AMBIGUOUS_CALLS
 import org.jetbrains.kotlin.fir.analysis.diagnostics.FirDiagnosticRenderers.COLLECTION
 import org.jetbrains.kotlin.fir.analysis.diagnostics.FirDiagnosticRenderers.DECLARATION_NAME
+import org.jetbrains.kotlin.fir.analysis.diagnostics.FirDiagnosticRenderers.EMPTY
 import org.jetbrains.kotlin.fir.analysis.diagnostics.FirDiagnosticRenderers.FIR
 import org.jetbrains.kotlin.fir.analysis.diagnostics.FirDiagnosticRenderers.FQ_NAMES_IN_TYPES
 import org.jetbrains.kotlin.fir.analysis.diagnostics.FirDiagnosticRenderers.FUNCTION_PARAMETERS
@@ -671,8 +672,8 @@ class FirDefaultErrorMessages {
             map.put(
                 OVERRIDE_DEPRECATION,
                 "This declaration overrides deprecated member but not marked as deprecated itself. Please add @Deprecated annotation or suppress",
-                TO_STRING,
-                TO_STRING
+                EMPTY,
+                EMPTY
             )
             map.put(ANNOTATION_ON_SUPERCLASS, "Annotations on superclass are meaningless")
             map.put(WRONG_ANNOTATION_TARGET, "This annotation is not applicable to target ''{0}''", TO_STRING)

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

@@ -49,6 +49,8 @@ object FirDiagnosticRenderers {
         element.toString()
     }
 
+    val EMPTY = Renderer { _: Any? -> "" }
+
     val VARIABLE_NAME = Renderer { symbol: FirVariableSymbol<*> ->
         symbol.name.asString()
     }

compiler/testData/diagnostics/tests/j+k/deprecations/forMixedOverride.fir.kt

@@ -16,7 +16,7 @@ interface WithDeprecation {
 }
 
 class A : J(), WithDeprecation {
-    override fun <!OVERRIDE_DEPRECATION!>foo<!>() {}
+    override fun <!OVERRIDE_DEPRECATION("")!>foo<!>() {}
 }
 
 fun main() {