CRT: make ClangModules public

When building against the build tree, we need to ensure that the flags
for the ClangModule propagate. This is required to ensure that we get
the modules visible even when building the rest of the SDK.

Author: compnerd

Runtimes/Overlay/Windows/CRT/CMakeLists.txt

@@ -14,8 +14,9 @@ target_compile_definitions(swiftCRT PRIVATE
 target_compile_options(swiftCRT PRIVATE
   "SHELL:-Xfrontend -disable-force-load-symbols"
   "SHELL:-Xcc -D_USE_MATH_DEFINES")
+target_link_libraries(swiftCRT PUBLIC
+  ClangModules)
 target_link_libraries(swiftCRT PRIVATE
-  ClangModules
   swiftCore)
 
 # FIXME: Why is this not implicitly in the interface flags?