[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/argumentMappedWithError.kt

@@ -1,8 +1,6 @@
 // FIR_IDENTICAL
-// IGNORE_BACKEND: JS_IR
-// IGNORE_BACKEND: JS_IR_ES6
 
-// MUTE_SIGNATURE_COMPARISON_K2: ANY
+// MUTE_SIGNATURE_COMPARISON_K2: JVM_IR
 // ^ KT-57755
 
 fun <R : Number> Number.convert(): R = TODO()