[SYCL][E2E] Disable select_device.cpp on Arc GPU (#12808)

Started to fail in post commit after
#12719. This looks like a pre-existing
bug in the test so I'm going to temporarily disable the test instead of
reverting. Will work on the fix with highest priority after that.

sycl/test-e2e/Config/select_device.cpp

@@ -1,4 +1,6 @@
 // REQUIRES: gpu
+// Post-commit fails due to a bug in test, will fix in a couple of days.
+// UNSUPPORTED: gpu-intel-dg2
 // RUN: %{build} -o %t.out
 //
 // RUN: env ONEAPI_DEVICE_SELECTOR="*:gpu" %{run-unfiltered-devices} %t.out DEVICE_INFO write > %t.txt
@@ -159,6 +161,8 @@ static std::vector<DevDescT> getAllowListDesc(std::string allowList) {
     }
 
     else if (allowList.find('|', pos) != std::string::npos) {
+      // FIXME: That is wrong and result in a infinite loop. We start processing
+      // the string from the start here.
       pos = allowList.find('|') + 1;
       while (allowList[pos] == ' ') {
         pos++;