Support MONAI RC tag in CI without explicitly setting it in bundle metadata and update spleen_segmentation ver

[mingxin-zheng]

Fixes #595

Description

Improve the CI to allow metadata bundle to use future release monai version, if the rc version exists.

Status

Work in progress

Please ensure all the checkboxes:

• [x] Codeformat tests passed locally by running ./runtests.sh --codeformat.

[mingxin-zheng]

When the variable is set to True, log shows:

2024-07-11T08:22:32.5639628Z ALLOW_MONAI_RC is set to true, the version range is monai>=1.3.2rc1,<1.3.3

Full log link

[mingxin-zheng]

/build

[yiheng-wang-nv]

/build