curl_share_cleanup() not checked for errors

**Describe the bug**

On Apache Arrow we're getting [Valgrind failures](https://github.com/ursacomputing/crossbow/actions/runs/17432520202/job/49503574535#step:6:10079) that happen in our Azure filesystem layer, which relies on the Azure SDK for C++.

According to Valgrind, the leak is in memory allocated by `curl_share_init`.
The Azure SDK does wrap the pointer returned by `curl_share_init` it in a [smart pointer-like class `CURLSHWrapper`](https://github.com/Azure/azure-sdk-for-cpp/blob/bc178b1f98f84ece20295514d5f56d4149695274/sdk/core/azure-core/src/http/curl/curl_connection_private.hpp#L53-L66). However, the `CURLSHWrapper` destructor does not account for the fact that `curl_share_cleanup` can fail: not only [according to the docs](https://curl.se/libcurl/c/curl_share_cleanup.html), but it can concretely [return `CURLSHE_IN_USE`](https://github.com/curl/curl/blob/24badd29f59600687d2c85de029035b207d25974/lib/share.c#L243-L247) if the shared handle is still in use (by some ongoing operation perhaps?).

I don't know if that's concretely the problem in our case, but it seems the Azure SDK should at least check for errors returned by `curl_share_cleanup` and log an error somewhere.

***Exception or Stack Trace***

I'm pasting one stack trace for reference, but the other ones look similar:
```
==17420== 39,976 (928 direct, 39,048 indirect) bytes in 4 blocks are definitely lost in loss record 43 of 43
==17420== at 0x49C6B9F: calloc (vg_replace_malloc.c:1675)
==17420== by 0x7173253: curl_share_init (in /opt/conda/envs/arrow/lib/libcurl.so.4.8.0)
==17420== by 0x5EE4A33: Azure::Core::Http::CurlConnection::CurlConnection(Azure::Core::Http::Request&, Azure::Core::Http::CurlTransportOptions const&, std::__cxx11::basic_string, std::allocator > const&, std::__cxx11::basic_string, std::allocator > const&, std::chrono::duration >) (in /opt/conda/envs/arrow/lib/libazure-core.so.1.16.0)
==17420== by 0x5EE729A: Azure::Core::Http::_detail::CurlConnectionPool::ExtractOrCreateCurlConnection(Azure::Core::Http::Request&, Azure::Core::Http::CurlTransportOptions const&, std::chrono::duration >, bool) (in /opt/conda/envs/arrow/lib/libazure-core.so.1.16.0)
==17420== by 0x5EE7B03: Azure::Core::Http::CurlTransport::Send(Azure::Core::Http::Request&, Azure::Core::Context const&) (in /opt/conda/envs/arrow/lib/libazure-core.so.1.16.0)
==17420== by 0x5F12F6D: Azure::Core::Http::Policies::_internal::TransportPolicy::Send(Azure::Core::Http::Request&, Azure::Core::Http::Policies::NextHttpPolicy, Azure::Core::Context const&) const (in /opt/conda/envs/arrow/lib/libazure-core.so.1.16.0)
==17420== by 0x5F07BDA: Azure::Core::Http::Policies::NextHttpPolicy::Send(Azure::Core::Http::Request&, Azure::Core::Context const&) (in /opt/conda/envs/arrow/lib/libazure-core.so.1.16.0)
==17420== by 0x5F06E1D: Azure::Core::Http::Policies::_internal::LogPolicy::Send(Azure::Core::Http::Request&, Azure::Core::Http::Policies::NextHttpPolicy, Azure::Core::Context const&) const (in /opt/conda/envs/arrow/lib/libazure-core.so.1.16.0)
==17420== by 0x5F07BDA: Azure::Core::Http::Policies::NextHttpPolicy::Send(Azure::Core::Http::Request&, Azure::Core::Context const&) (in /opt/conda/envs/arrow/lib/libazure-core.so.1.16.0)
==17420== by 0x5F0DCAB: Azure::Core::Http::Policies::_internal::RequestActivityPolicy::Send(Azure::Core::Http::Request&, Azure::Core::Http::Policies::NextHttpPolicy, Azure::Core::Context const&) const (in /opt/conda/envs/arrow/lib/libazure-core.so.1.16.0)
==17420== by 0x5F07BDA: Azure::Core::Http::Policies::NextHttpPolicy::Send(Azure::Core::Http::Request&, Azure::Core::Context const&) (in /opt/conda/envs/arrow/lib/libazure-core.so.1.16.0)
==17420== by 0x4BB254D: Azure::Storage::_internal::SharedKeyPolicy::Send(Azure::Core::Http::Request&, Azure::Core::Http::Policies::NextHttpPolicy, Azure::Core::Context const&) const (in /opt/conda/envs/arrow/lib/libazure-storage-files-datalake.so)
==17420== by 0x5F07BDA: Azure::Core::Http::Policies::NextHttpPolicy::Send(Azure::Core::Http::Request&, Azure::Core::Context const&) (in /opt/conda/envs/arrow/lib/libazure-core.so.1.16.0)
==17420== by 0x64BE701: Azure::Storage::_internal::StoragePerRetryPolicy::Send(Azure::Core::Http::Request&, Azure::Core::Http::Policies::NextHttpPolicy, Azure::Core::Context const&) const (in /opt/conda/envs/arrow/lib/libazure-storage-common.so.12.10.0)
==17420== by 0x5F07BDA: Azure::Core::Http::Policies::NextHttpPolicy::Send(Azure::Core::Http::Request&, Azure::Core::Context const&) (in /opt/conda/envs/arrow/lib/libazure-core.so.1.16.0)
==17420== by 0x64BF864: Azure::Storage::_internal::StorageSwitchToSecondaryPolicy::Send(Azure::Core::Http::Request&, Azure::Core::Http::Policies::NextHttpPolicy, Azure::Core::Context const&) const (in /opt/conda/envs/arrow/lib/libazure-storage-common.so.12.10.0)
==17420== by 0x5F07BDA: Azure::Core::Http::Policies::NextHttpPolicy::Send(Azure::Core::Http::Request&, Azure::Core::Context const&) (in /opt/conda/envs/arrow/lib/libazure-core.so.1.16.0)
==17420== by 0x5F11250: Azure::Core::Http::Policies::_internal::RetryPolicy::Send(Azure::Core::Http::Request&, Azure::Core::Http::Policies::NextHttpPolicy, Azure::Core::Context const&) const (in /opt/conda/envs/arrow/lib/libazure-core.so.1.16.0)
==17420== by 0x5F07BDA: Azure::Core::Http::Policies::NextHttpPolicy::Send(Azure::Core::Http::Request&, Azure::Core::Context const&) (in /opt/conda/envs/arrow/lib/libazure-core.so.1.16.0)
==17420== by 0x5F11D3B: Azure::Core::Http::Policies::_internal::TelemetryPolicy::Send(Azure::Core::Http::Request&, Azure::Core::Http::Policies::NextHttpPolicy, Azure::Core::Context const&) const (in /opt/conda/envs/arrow/lib/libazure-core.so.1.16.0)
==17420== by 0x5F07BDA: Azure::Core::Http::Policies::NextHttpPolicy::Send(Azure::Core::Http::Request&, Azure::Core::Context const&) (in /opt/conda/envs/arrow/lib/libazure-core.so.1.16.0)
==17420== by 0x4BB2816: Azure::Core::Http::Policies::_internal::RequestIdPolicy::Send(Azure::Core::Http::Request&, Azure::Core::Http::Policies::NextHttpPolicy, Azure::Core::Context const&) const (in /opt/conda/envs/arrow/lib/libazure-storage-files-datalake.so)
==17420== by 0x5F07BDA: Azure::Core::Http::Policies::NextHttpPolicy::Send(Azure::Core::Http::Request&, Azure::Core::Context const&) (in /opt/conda/envs/arrow/lib/libazure-core.so.1.16.0)
==17420== by 0x4BB18AF: Azure::Storage::_internal::StorageServiceVersionPolicy::Send(Azure::Core::Http::Request&, Azure::Core::Http::Policies::NextHttpPolicy, Azure::Core::Context const&) const (in /opt/conda/envs/arrow/lib/libazure-storage-files-datalake.so)
==17420== by 0x4BFDFA3: Azure::Storage::Files::DataLake::_detail::PathClient::GetAccessControlList(Azure::Core::Http::_internal::HttpPipeline&, Azure::Core::Url const&, Azure::Storage::Files::DataLake::_detail::PathClient::GetPathAccessControlListOptions const&, Azure::Core::Context const&) (in /opt/conda/envs/arrow/lib/libazure-storage-files-datalake.so)
==17420== by 0x4BC45F9: Azure::Storage::Files::DataLake::DataLakePathClient::GetAccessControlList(Azure::Storage::Files::DataLake::GetPathAccessControlListOptions const&, Azure::Core::Context const&) const (in /opt/conda/envs/arrow/lib/libazure-storage-files-datalake.so)
==17420== by 0x5BA501B: arrow::fs::internal::CheckIfHierarchicalNamespaceIsEnabled(Azure::Storage::Files::DataLake::DataLakeFileSystemClient const&, arrow::fs::AzureOptions const&) (azurefs.cc:1363)
==17420== by 0x40B6E76: arrow::fs::TestAzuriteFileSystem_CheckIfHierarchicalNamespaceIsEnabledTransportError_Test::TestBody() (azurefs_test.cc:2426)
==17420== by 0x5E9A14F: void testing::internal::HandleSehExceptionsInMethodIfSupported(testing::Test*, void (testing::Test::*)(), char const*) (gtest.cc:2653)
==17420== by 0x5EA8B45: void testing::internal::HandleExceptionsInMethodIfSupported(testing::Test*, void (testing::Test::*)(), char const*) (gtest.cc:2689)
==17420== by 0x5EA8D65: testing::Test::Run() (gtest.cc:2728)
==17420== by 0x5EA90BB: testing::TestInfo::Run() (gtest.cc:2874)
==17420== by 0x5EB1336: testing::TestSuite::Run() (gtest.cc:3052)
==17420== by 0x5EB3D8C: testing::internal::UnitTestImpl::RunAllTests() (gtest.cc:6004)
==17420== by 0x5E9A6A3: bool testing::internal::HandleSehExceptionsInMethodIfSupported(testing::internal::UnitTestImpl*, bool (testing::internal::UnitTestImpl::*)(), char const*) (gtest.cc:2653)
==17420== by 0x5EA932C: bool testing::internal::HandleExceptionsInMethodIfSupported(testing::internal::UnitTestImpl*, bool (testing::internal::UnitTestImpl::*)(), char const*) (gtest.cc:2689)
==17420== by 0x5EA94F7: testing::UnitTest::Run() (gtest.cc:5583)
==17420== by 0x4B61841: RUN_ALL_TESTS() (gtest.h:2334)
==17420== by 0x4B6187E: main (gtest_main.cc:64)
==17420==
```

**Setup (please complete the following information):**
- Azure SDK 1.16.0

**Additional context**
Add any other context about the problem here.

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