[FIR] Add testcases to throw class with unresolved parent.

^KT-60048 Fixed

compiler/testData/diagnostics/nativeTests/throws.fir.kt

@@ -40,6 +40,10 @@ fun throwsEmptyParens() {}
 @Throws(<!ANNOTATION_ARGUMENT_MUST_BE_CONST!><!UNRESOLVED_REFERENCE!>UnresolvedException<!>::class<!>)
 fun throwsUnresolved() {}
 
+class Orphan : <!UNRESOLVED_REFERENCE!>MyUnresolvedParent<!>
+@Throws(<!ARGUMENT_TYPE_MISMATCH!>Orphan::class<!>)
+fun throwsClassWithUnresolvedParent() {}
+
 @Throws(exceptionClasses = <!ANNOTATION_ARGUMENT_MUST_BE_CONST, ARGUMENT_TYPE_MISMATCH, ASSIGNING_SINGLE_ELEMENT_TO_VARARG_IN_NAMED_FORM_ANNOTATION_ERROR!><!UNRESOLVED_REFERENCE!>UnresolvedException<!>::class<!>)
 fun throwsNamedUnresolved() {}
 
@@ -312,6 +316,9 @@ suspend fun suspendThrowsSpreadArrayOfUnresolved() {}
 @Throws(UEAlias::class)
 suspend fun suspendThrowsTypealiasToUnresolved() {}
 
+@Throws(<!ARGUMENT_TYPE_MISMATCH!>Orphan::class<!>)
+suspend fun suspendThrowsClassWithUnresolvedParent() {}
+
 @Throws(Exception1::class, CancellationException::class)
 suspend fun suspendThrowsCancellationException1() {}