[FIR] Remove the applicability filtering when reporting diagnostics

In case we don't want to introduce any new
abstractions like "user relevance for
applicability", we can just remove the
filtering.

^KT-62541 Fixed

compiler/testData/diagnostics/testsWithStdLib/smartcasts/unsoundSmartcast.fir.kt

@@ -36,6 +36,6 @@ operator fun Int.invoke(y: Int, z: Int) {}
 fun test5() {
     var x: Int? = 10
     x!!
-    <!UNSAFE_IMPLICIT_INVOKE_CALL!>x<!>(if (true) { x = null; 0 } else 0, x)
+    <!UNSAFE_IMPLICIT_INVOKE_CALL!>x<!>(if (true) { x = null; 0 } else 0, <!ARGUMENT_TYPE_MISMATCH!>x<!>)
     x<!UNSAFE_CALL!>.<!>inv()
 }