[clang] [HLSL] Handle incomplete array types (PR #133508)

[Sarah Spall via cfe-commits]

================
@@ -0,0 +1,53 @@
+// RUN: %clang_cc1 -triple dxil-pc-shadermodel6.0-compute -finclude-default-header -verify -Wdouble-promotion -Wconversion %s
+
----------------
spall wrote:

Maybe you should add a test case for an array of arrays, like 'int2[2][]'

https://github.com/llvm/llvm-project/pull/133508