[HLO Componentization] Populate hlo/testlib sub-component (Phase II).

This CL takes care of
1. Migrating external projects dependencies from

```
tensorflow/compiler/xla:test
tensorflow/compiler/xla:test_helpers
tensorflow/compiler/xla/service:pattern_matcher_gmock
```

to `tensorflow/compiler/xla/hlo/testlib:*`

PiperOrigin-RevId: 714495584

Author: sdasgup3

utils/cycle_detector_test.cc

@@ -15,7 +15,7 @@ limitations under the License.
 
 #include "utils/cycle_detector.h"
 
-#include "third_party/tensorflow/compiler/xla/test.h"
+#include "third_party/tensorflow/compiler/xla/hlo/testlib/test.h"
 
 class GraphCyclesTest : public ::testing::Test {
  public: