Revert "Revert "[BACKEND] Enhance the 2D Block io lowering for tt.store. (#4561)" (#4635)"

This reverts commit 1cd99d5.

Author: chengjunlu

include/triton/Tools/Sys/GetEnv.hpp

@@ -51,6 +51,7 @@ inline const std::set<std::string> CACHE_INVALIDATING_ENV_VARS = {
     "TRITON_INTEL_ENABLE_INSTR_SCHED",
     "TRITON_INTEL_FAST_MATH",
     "TRITON_INTEL_REDUCE_TRANSPOSE",
+    "TRITON_INTEL_ENABLE_BLOCK_IO_STORE_ON_REGULAR_PTR",
     // clang-format on
 };