FIR checker: fix diagnostic parameter renderer

Some of the current renderer is fallbacking to `toString` and output the
fully qualified class name with hash code.

idea/testData/checker/diagnosticsMessage/nArgumentsExpectedMessage.fir.kt

@@ -1,9 +1,7 @@
-// IGNORE_FIR
-
 package name.that.may.be.very.long
 
 import java.io.Serializable
 
 interface Foo<T> : Comparable<Foo<T>>, Serializable, Cloneable
 
-fun test(<warning>f</warning>: <error descr="[WRONG_NUMBER_OF_TYPE_ARGUMENTS] One type argument expected for interface Foo<T>">Foo</error>) {}
+fun test(f: <error descr="[WRONG_NUMBER_OF_TYPE_ARGUMENTS] One type argument expected for name/that/may/be/very/long/Foo">Foo</error>) {}