[FIR] Fix TEST SPEC tests

Ensure the test data contents for both the frontends
are identical. This is needed for proper analysis of
K2-differences.

compiler/tests-spec/testData/diagnostics/notLinked/dfa/pos/32.fir.kt

@@ -1,6 +1,15 @@
 // !DIAGNOSTICS: -UNUSED_EXPRESSION
 // SKIP_TXT
 
+/*
+ * KOTLIN DIAGNOSTICS NOT LINKED SPEC TEST (POSITIVE)
+ *
+ * SECTIONS: dfa
+ * NUMBER: 32
+ * DESCRIPTION: Raw data flow analysis test
+ * HELPERS: classes, objects, typealiases, enumClasses, interfaces, sealedClasses
+ */
+
 // TESTCASE NUMBER: 1
 fun <T: Any, K: Any> case_1(x: T?, y: K?) {
     x as T