[TypeChecker] NFC: Make test-case for rdar://problem/33688063 more complicated

SE-0213 improved cases like that but we still have problem with operator
overloads, so just need to make this a bit more complicated to reproduce again.

Resolves: rdar://problem/42304000

Author: xedin

validation-test/Sema/type_checker_perf/slow/rdar33688063.swift

@@ -1,5 +1,5 @@
 // RUN: %target-typecheck-verify-swift -solver-expression-time-threshold=1 -swift-version 4
 // REQUIRES: tools-release,no_asserts
 
-let _ = 1 | UInt32(0) << 0 | UInt32(1) << 1 | UInt32(2) << 2
+let _ = 1 | UInt32(0) << 0 | UInt32(1) << 1 | UInt32(2) << 2 | UInt32(3) << 3 | UInt32(4) << 4
 // expected-error@-1 {{reasonable time}}