kubeflow / trainer / 23081283305

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master: 62%

Pull #3237

github

feat(runtimes): add framework-level env var conflict validation across plugins

Add cross-plugin environment variable conflict detection to prevent
runtime issues when plugins share reserved env names:

- Add MPIRunReservedEnvNames constant for OpenMPI reserved env vars
- Add EnvVarsReserverPlugin interface for plugins to expose reserved env names
- Implement ReservedEnvVarNames() on MPI and Torch plugins
- Add user-env conflict validation to MPI plugin (mirrors existing Torch pattern)
- Add cross-plugin conflict detection in RunCustomValidationPlugins
- Add unit tests for MPI env validation

Closes #3147

Signed-off-by: krishdef7 <gargkrish06@gmail.com>

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