Fix[BMQ,MQB]: ensure Solaris build

[678098]

1. Fix return value optimization problem with Solaris in bmqp::BlobPoolUtil::createBlobPool, by returning a shared pointer to the blob pool. The choice of shared pointer type is made to do it compatible with resource manager PR: Perf[BMQ,MQB]: resource manager for per-thread resources #499
2. Update all places where blob shared pointer pool is used.
3. bmqstoragetool: remove incompatible initializer list usage.
4. bmqio_ntcchannel.t: disambiguate argument for ntcf::System::createInterface call.
5. Logger classes: explicitly implement publish override to get rid of a warning.
6. bmqu::BlobIterator remove unused const char* operator->() const; that produces a compilation warning Warning: Questionable (non-class) return type for BloombergLP::bmqu::BlobIterator::operator->() const.
7. Replace unrecognized nullptr usage by NULL or bsl::nullptr_t() where applicable.
8. mqbstat: pass enum template arguments in a way acceptable by Solaris compiler (BrokerStats::EventType::Enum::e_CLIENT_DESTROYED -> BrokerStats::EventType::e_CLIENT_DESTROYED).
9. storage tool: set allocator flag via bmqtst::TestHelperUtil::ignoreCheckDefAlloc()

[kaikulimu]

1. How did you test that the code is now compatible with Solaris compiler?
2. There are a couple integration test failures. Could they be related to your changes?

[678098]

@kaikulimu

• There are a couple integration test failures. Could they be related to your changes?

These failures are also present in the build from the latest main:

https://github.com/bloomberg/blazingmq/actions/runs/12712681267/job/35439252483

[hallfox]

Suggested change

	return bsl::shared_ptr<BlobSpPool>(
	new (*alloc) BlobSpPool(
	bdlf::BindUtil::bind(&createBlob,
	blobBufferFactory_p,
	bdlf::PlaceHolders::_1, // arena
	bdlf::PlaceHolders::_2), // allocator
	k_BLOB_POOL_GROWTH_STRATEGY,
	alloc),
	alloc);
	return bsl::allocate_shared<BlobSpPool>(
	alloc,
	bdlf::BindUtil::bind(&createBlob,
	blobBufferFactory_p,
	bdlf::PlaceHolders::_1, // arena
	bdlf::PlaceHolders::_2), // allocator
	k_BLOB_POOL_GROWTH_STRATEGY));

Slightly reduces the number of allocator shenanigans. allocate_shared should forward the allocator to the right BlobSpPool constructor and provide it to the resulting shared_ptr.

[hallfox]

I find the use of nullptr_t's constructor a little controversial, I feel as if we should really only be using preexisting representations of a nullptr (e.g. NULL, nullptr) but I suppose this works?

[678098]

I find the use of nullptr_t's constructor a little controversial, I feel as if we should really only be using preexisting representations of a nullptr (e.g. NULL, nullptr) but I suppose this works?

Pure nullptr doesn't work on Solaris, NULL or bsl::nullptr_t() work, but bsl::nullptr_t() is more restrictive. We typically used bsl::nullptr_t() to reset callbacks (bsl::function)