Add `load_pretrain` flag in the reference

[KumoLiu]

Follow up https://github.com/Project-MONAI/model-zoo/pull/559 https://github.com/Project-MONAI/model-zoo/pull/561 https://github.com/Project-MONAI/model-zoo/pull/565, here introduced the load_pretrain flag. This allows users to decide whether or not to load pre-trained weights when initializing the workflow.

Status

Ready

Please ensure all the checkboxes:

• [x] Codeformat tests passed locally by running ./runtests.sh --codeformat.
• [ ] In-line docstrings updated.
• [ ] Update version and changelog in metadata.json if changing an existing bundle.
• [ ] Please ensure the naming rules in config files meet our requirements (please refer to: CONTRIBUTING.md).
• [ ] Ensure versions of packages such as monai, pytorch and numpy are correct in metadata.json.
• [ ] Descriptions should be consistent with the content, such as eval_metrics of the provided weights and TorchScript modules.
• [ ] Files larger than 25MB are excluded and replaced by providing download links in large_file.yml.
• [ ] Avoid using path that contains personal information within config files (such as use /home/your_name/ for "bundle_root").

[yiheng-wang-nv]

seems there is a format error: https://github.com/Project-MONAI/model-zoo/actions/runs/8376538952/job/22937013894?pr=571#step:7:100 It was produced by another bundle, let me try to fix it

[yiheng-wang-nv]

/build