Don't error on IREE_ENABLE_TSAN without IREE_BYTECODE_MODULE_ENABLE_TSAN when IREE_BUILD_COMPILER=OFF

[Stella Laurenzo]

Currently an error like this is printed:

CMake Error at CMakeLists.txt:474 (message):
  When IREE_BYTECODE_MODULE_ENABLE_ASAN or IREE_BYTECODE_MODULE_ENABLE_TSAN
  is ON, IREE_BYTECODE_MODULE_FORCE_LLVM_SYSTEM_LINKER must also be ON.
  ASAN/TSAN instrumentation is not currently supported in embedded modules.

This should be suppressed when only building the runtime.

[Peyman Barazandeh]

Hi,

I would like to create a PR for this issue. Can you assign it to me please?

Thank you,
Peyman

[Stella Laurenzo]

Done.