Now using cuPDLP-C power method, and KKT tolerance of 1e-6 in unit test hi-pdlp

Author: Yanyu000

check/TestPdlp.cpp

@@ -338,7 +338,7 @@ TEST_CASE("hi-pdlp", "[pdlp]") {
   //  h.setOptionValue("output_flag", dev_run);
   REQUIRE(h.readModel(model_file) == HighsStatus::kOk);
   h.setOptionValue("solver", kHiPdlpString);
-  h.setOptionValue("kkt_tolerance", kkt_tolerance);
+  h.setOptionValue("kkt_tolerance", 1e-6);//kkt_tolerance);
 
   h.setOptionValue("pdlp_scaling_mode", 0);
   h.setOptionValue("pdlp_restart_strategy", 0);

highs/pdlp/hipdlp/pdhg.cc

@@ -807,9 +807,9 @@ HighsStatus PDLPSolver::PowerMethod(HighsLp &lp, double& op_norm_sq) {
     const HighsInt kCuPdlpAATPowerMethod = 2;
 
     const HighsInt power_method =
-       kYanyuPowerMethod;
+      // kYanyuPowerMethod;
       // kYanyuPowerMethodDev;
-      // kCuPdlpAATPowerMethod;
+       kCuPdlpAATPowerMethod;
     printf("Power method: %s\n", power_method == kYanyuPowerMethod ? "Yanyu" : power_method == kYanyuPowerMethodDev ? "Yanyu dev" : "CuPdlp-C");
     // Dev version of Yanyu power method (based on A'A) has
     //