ADIOS2 backend does not work with particle buffers for BTD for >1 mpi simulation

[RevathiJambunathan]

PR #1898 adds capability to visualize particles for back-transformed lab-frame data.
However, it currently does not work with ADIOS2 backend.
Attached is the input file that fails.

inputs_2d_boost_testBTD.txt

The code runs to completion when using more than 1 mpi-rank.
However, when visualizing snapshot 2 where two flushes are made for the particles,
The RealProperties do not have the right meta-data. Ideally there need to be 1000 particles for the driver species
498 for the first flush and 502 from the second. But somehow it does not recognize that second flush

X-ref: openPMD/openPMD-api#1126