[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/js/dynamic/dynamicMemberAssignment.ir.txt

@@ -15,7 +15,7 @@ FILE fqName:<root> fileName:/dynamicMemberAssignment.kt
         WHEN type=kotlin.Unit origin=null
           BRANCH
             if: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EQEQ
-              arg0: GET_VAR 'val tmp_0: dynamic [val] declared in <root>.testSafeMemberAssignment' type=dynamic origin=null
+              arg0: GET_VAR 'val tmp_0: dynamic declared in <root>.testSafeMemberAssignment' type=dynamic origin=null
               arg1: CONST Null type=kotlin.Nothing? value=null
             then: TYPE_OP type=kotlin.Unit origin=IMPLICIT_COERCION_TO_UNIT typeOperand=kotlin.Unit
               CONST Null type=kotlin.Nothing? value=null
@@ -23,5 +23,5 @@ FILE fqName:<root> fileName:/dynamicMemberAssignment.kt
             if: CONST Boolean type=kotlin.Boolean value=true
             then: DYN_OP operator=EQ type=kotlin.Unit
               receiver: DYN_MEMBER memberName='m' type=kotlin.Unit
-                GET_VAR 'val tmp_0: dynamic [val] declared in <root>.testSafeMemberAssignment' type=dynamic origin=null
+                GET_VAR 'val tmp_0: dynamic declared in <root>.testSafeMemberAssignment' type=dynamic origin=null
               0: CONST Int type=kotlin.Int value=1