FIR: Do not add alias for variables with explicit type

compiler/testData/codegen/box/ieee754/equalsNaN_properIeeeComparisons.kt

@@ -1,5 +1,4 @@
 // !LANGUAGE: +ProperIeee754Comparisons
-// IGNORE_BACKEND_FIR: JVM_IR
 // WITH_RUNTIME
 
 import kotlin.test.*
@@ -224,4 +223,4 @@ fun box(): String {
     testFloat(Float.NaN, Float.NaN, Float.NaN)
 
     return "OK"
-}
+}