[IO] TCollectionProxyInfo::Type allow specialisations for vector<bool, A<bool>>
[IO] TCollectionProxyInfo::Type allow specialisations for vector<bool, A<bool>>

for any A.
The TCollectionProxyInfo::Type template had a specialisation for std::vector<bool>,
i.e. exclusively for cases where the standard allocator was used. This change allows
to use that specialisation not only for vector<bool> but for all possible allocator
types, i.e. for vector<bool, A>

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