[FIR] Add CAST_NEVER_SUCCEEDS

compiler/testData/diagnostics/tests/Constants.fir.kt

@@ -32,11 +32,11 @@ fun test() {
     checkSubtype<Double>(<!ARGUMENT_TYPE_MISMATCH!>1<!>)
     checkSubtype<Float>(<!ARGUMENT_TYPE_MISMATCH!>1<!>)
 
-    1 as Byte
+    1 <!CAST_NEVER_SUCCEEDS!>as<!> Byte
     1 <!USELESS_CAST!>as Int<!>
-    0xff as Long
+    0xff <!CAST_NEVER_SUCCEEDS!>as<!> Long
 
-    1.1 as Int
+    1.1 <!CAST_NEVER_SUCCEEDS!>as<!> Int
     checkSubtype<Int>(<!ARGUMENT_TYPE_MISMATCH!>1.1<!>)
 
     varargByte(0x77, 1, 3, <!ARGUMENT_TYPE_MISMATCH!>200<!>, 0b111)