Build fails with Go 1.27

Hey,

build with Go 1.27 fails with `pkg/util/hack/hack.go:41:2: undefined: checkMapABI`

...due to unmet `!go1.27` build constraints:
https://github.com/pingcap/tidb/blob/05b396fb6636f73b3bc06b09107cf43f2c725c35/pkg/util/hack/map_abi_go126.go#L15
https://github.com/pingcap/tidb/blob/05b396fb6636f73b3bc06b09107cf43f2c725c35/pkg/util/hack/map_abi_test_type_go126_test.go#L15
https://github.com/pingcap/tidb/blob/05b396fb6636f73b3bc06b09107cf43f2c725c35/pkg/util/hack/map_abi_test.go#L15

Found in
* https://github.com/Homebrew/homebrew-core/pull/288803

Start with pkg/util/hack/hack.go:41 and inspect the Go version build constraints in map_abi_go126.go, map_abi_test_type_go126_test.go, and map_abi_test.go. Reproduce the failure with Go 1.27, then verify that the hack package and its tests build successfully without the undefined checkMapABI error.

Written by the indexing model from the issue text.