PR #22723: Fix call of overloaded Tile is ambiguous

Imported from GitHub PR #22723

#### Fix GCC-13 Build Error in AutoSharding Due to vector<vector> vs. absl::Span Ambiguity

When building auto_sharding with GCC-13, the following build error occurred:

```
xla/hlo/experimental/auto_sharding/auto_sharding.cc:895:37: error: call of overloaded 'Tile(const xla::Shape&, <brace-enclosed initializer list>, <brace-enclosed initializer list>, const xla::spmd::DeviceMesh&)' is ambiguous
  895 |       HloSharding output_spec = Tile(shape, {i}, {j}, device_mesh);
      |                                 ~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from ./xla/hlo/experimental/auto_sharding/cluster_environment.h:33,
                 from ./xla/hlo/experimental/auto_sharding/auto_sharding.h:41:
./xla/hlo/experimental/auto_sharding/auto_sharding_util.h:499:13: note: candidate: 'xla::HloSharding xla::spmd::Tile(const xla::Shape&, absl::lts_20230802::Span<const long int>, const std::vector<std::vector<long int> >&, const DeviceMesh&)'
  499 | HloSharding Tile(const Shape& tensor_shape,
      |             ^~~~
./xla/hlo/experimental/auto_sharding/auto_sharding_util.h:504:13: note: candidate: 'xla::HloSharding xla::spmd::Tile(const xla::Shape&, absl::lts_20230802::Span<const long int>, absl::lts_20230802::Span<const long int>, const DeviceMesh&)'
  504 | HloSharding Tile(const Shape& tensor_shape,
      |             ^~~~
```

#### Solution:
To resolve the ambiguity between `std::vector<std::vector<int64_t>>` and `absl::Span<const int64_t>` in `Tile()`, I introduced an overloaded Tile() function that takes `std::initializer_list<int64_t> mesh_dims`.

Now, expressions like the following now compile successfully with GCC-13:

```
Tile(shape, {0}, {0}, device_mesh);
```

#### Additional Changes
- Removed the `Tile()` declaration from `auto_sharding.h` since it is already declared in `auto_sharding_util.h`.

Copybara import of the project:

--
a28207f by Alexander Pivovarov <apivovarov@gmail.com>:

Fix call of overloaded Tile is ambiguous

Merging this change closes #22723

COPYBARA_INTEGRATE_REVIEW=#22723 from apivovarov:fix_Tile_init_list a28207f
PiperOrigin-RevId: 728206576

xla/hlo/experimental/auto_sharding/auto_sharding.h

@@ -128,10 +128,6 @@ class AutoSharding : public HloModulePass {
 namespace spmd {
 // Function declarations.
 // Their comments can be found in their definitions in *.cc files.
-HloSharding Tile(const Shape& shape, absl::Span<const int64_t> tensor_dims,
-                 absl::Span<const int64_t> mesh_dims,
-                 const DeviceMesh& device_mesh);
-
 std::vector<double> CommunicationReshardingCostVector(
     const StrategyGroup& strategy_group, const Shape& shape,
     const HloSharding& required_sharding,

xla/hlo/experimental/auto_sharding/auto_sharding_util.cc

@@ -1671,10 +1671,15 @@ HloSharding Tile(const Shape& tensor_shape,
   for (int i = 0; i < mesh_dims.size(); ++i) {
     mesh_dims_general[i].push_back(mesh_dims[i]);
   }
-  if (device_mesh.IsIota()) {
-    return TileV2(tensor_shape, tensor_dims, mesh_dims_general, device_mesh);
-  }
-  return TileV1(tensor_shape, tensor_dims, mesh_dims_general, device_mesh);
+  return Tile(tensor_shape, tensor_dims, mesh_dims_general, device_mesh);
+}
+
+HloSharding Tile(const Shape& tensor_shape,
+                 absl::Span<const int64_t> tensor_dims,
+                 std::initializer_list<int64_t> mesh_dims,
+                 const DeviceMesh& device_mesh) {
+  return Tile(tensor_shape, tensor_dims, absl::Span<const int64_t>(mesh_dims),
+              device_mesh);
 }
 
 AliasMap BuildAliasMap(const HloModule* module,
@@ -1858,7 +1863,8 @@ absl::Status CheckAliasSetCompatibility(const AliasSet& alias_set,
              "tensors and may result in large memory consumption: "
           << "(" << instructions.at(src_strategy_group->instruction_id)->name()
           << ", " << instructions.at(dst_strategy_group->instruction_id)->name()
-          << ")" << "\n"
+          << ")"
+          << "\n"
           << "(" << src_strategy_group->node_idx << ", "
           << dst_strategy_group->node_idx << ")\n"
           << src_strategy_group->ToString() << "\n"
@@ -1922,7 +1928,8 @@ absl::StatusOr<AliasCompatibility> ComputeAliasCompatibility(
                  << instructions.at(src_strategy_group->instruction_id)->name()
                  << ", "
                  << instructions.at(dst_strategy_group->instruction_id)->name()
-                 << ")" << "\n"
+                 << ")"
+                 << "\n"
                  << "(" << src_strategy_group->node_idx << ", "
                  << dst_strategy_group->node_idx << ")\n"
                  << src_strategy_group->ToString() << "\n"

xla/hlo/experimental/auto_sharding/auto_sharding_util.h

@@ -506,6 +506,11 @@ HloSharding Tile(const Shape& tensor_shape,
                  absl::Span<const int64_t> mesh_dims,
                  const DeviceMesh& device_mesh);
 
+HloSharding Tile(const Shape& tensor_shape,
+                 absl::Span<const int64_t> tensor_dims,
+                 std::initializer_list<int64_t> mesh_dims,
+                 const DeviceMesh& device_mesh);
+
 AliasMap BuildAliasMap(const HloModule* module,
                        const HloInputOutputAliasConfig& alias_config);