DAOS-16365 client: intercept MPI_Init() to avoid nested call (#14992)

[wiliamhuang]

We observed deadlock in MPI applications on Aurora due to nested calls of zeInit() inside MPI_Init(). daos_init() is involved in such nested calls. This PR intercepts MPI_Init() and avoid running daos_init() inside MPI_Init().

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[github-actions]

Ticket title is 'deadlock in MPI application on Aurora with libpil4dfs'
Status is 'Awaiting backport'
Labels: 'intercept_lib,scrubbed_2.8'
Job should run at elevated priority (1)
https://daosio.atlassian.net/browse/DAOS-16365

[wiliamhuang]

All tests passed in CI.