Add regression test for https://bugs.swift.org/browse/SR-10792

Author: slavapestov

validation-test/compiler_crashers_2_fixed/sr10792.swift

@@ -0,0 +1,8 @@
+// RUN: %target-swift-frontend -emit-ir %s
+
+protocol DateGroupedCollection: Collection {
+  typealias DictionaryType = [String: Int]
+
+  typealias Index = DictionaryType.Index
+  typealias Element = DictionaryType.Element
+}