Merge pull request swiftlang#84999 from hamishknight/add-fixed-crasher

[test] Add a fixed crasher

Author: hamishknight

validation-test/compiler_crashers_fixed/9836fc014b482176.swift

@@ -0,0 +1,4 @@
+// {"kind":"typecheck","original":"82a2edc3","signature":"$s20_CompilerSwiftParser0C0V21parseDeclModifierList01_aB6Syntax03RawefgH0VyF"}
+// RUN: not %target-swift-frontend -typecheck %s
+public { {} }
+open