[IR] Don't print multifile/synthetic facade class names in irText tests

This only applies to JVM and fq-names in declaration references
in IR dumps.

This enables us to run more irText tests on platforms other than JVM
(see KT-58605).

compiler/testData/ir/irText/expressions/callableReferences/kt46069.kt

@@ -1,7 +1,4 @@
 // SKIP_KT_DUMP
-// IGNORE_BACKEND: JS_IR
-// IGNORE_BACKEND: JS_IR_ES6
-
 class ObjectAssert<ACTUAL> {
     fun describedAs(description: String?, vararg args: Any?): ObjectAssert<ACTUAL>? = null
 }