[IR] Don't print flags in declaration references in irText tests

This doesn't reduce the quality of tests, because the flags are still
printed for declarations themselves. We only omit them in references.

However, this makes the tests more compatible with non-JVM backends
(see KT-58605), because flags of referenced stdlib declarations may
differ among target platforms.

compiler/testData/ir/irText/declarations/catchParameterInTopLevelProperty.ir.txt

@@ -4,7 +4,7 @@ FILE fqName:<root> fileName:/catchParameterInTopLevelProperty.kt
       EXPRESSION_BODY
         TRY type=kotlin.Unit
           try: BLOCK type=kotlin.Unit origin=null
-          CATCH parameter=val e: kotlin.Throwable [val] declared in <root>.test
+          CATCH parameter=val e: kotlin.Throwable declared in <root>.test
             VAR CATCH_PARAMETER name:e type:kotlin.Throwable [val]
             BLOCK type=kotlin.Unit origin=null
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test> visibility:public modality:FINAL <> () returnType:kotlin.Unit