boost::iostreams::stream<boost::iostreams::array> fails for size > 2GB when calling tellp

Test program:
```c++
#include
#include
#include
#include
#include
#include

int main(int argc, char* argv[])
{
// some numbers such that total buffer is larger than 2GB
const std::streamoff s1(2000);
const std::streamoff s2(314748);
std::vector buffer(s1*s2);
const auto buf_size = static_cast(buffer.size())* sizeof(float);
typedef boost::iostreams::stream array_stream;
array_stream s(reinterpret_cast(buffer.data()), buf_size);

// write some data from a smaller buffer
std::vector buffer2(s2, 1.F);
for (std::streamoff i=0; i(buffer2.data()), s2*sizeof(float));
}
if (std::abs(buffer[s1*s2-1] -1.F) > .001F)
{
std::cerr << "wrong output\n";
return 1;
}
return 0;
}
```
fails. g++-8 and boost 1.65.1 gives
```
...
before (1704) 2145322368
before (1705) 2146581360
before (1706) -1
before (1707) -1
...
wrong output
```
g++-12 and boost 1.74.0. gives
```
...
before (1704) 2145322368
before (1705) 2146581360
terminate called after throwing an instance of 'boost::wrapexcept'
what(): bad seek: iostream error
Aborted (core dumped)
```
It works fine when not calling `tellg()`. This is similar to https://github.com/boostorg/interprocess/issues/190, although here we don't have a segfault.

Start by compiling and running the supplied C++ reproducer with boost::iostreams::stream, including the tellp calls after the position exceeds 2GB. Trace the array stream's position handling around that boundary. Done means large-buffer writes complete, tellp continues returning valid positions, and the final buffer check succeeds.

Written by the indexing model from the issue text.