Install odh-elyra package on runtime images to avoid curl-based bootstrapper download

[coderabbitai]

Context

Currently, the odh-elyra package is not installed in runtime images, which requires downloading the bootstrapper.py file directly from the upstream GitHub repository using curl (as seen in PR #2555).

Proposal

Consider one of the following approaches:

1. Install the odh-elyra package on runtime images so that bootstrapper.py is available locally
2. Split off bootstrapper.py into its own subpackage that can be installed independently on runtime images

Installing odh-elyra (or a subset of it) would eliminate the need for downloading files from external URLs during image builds and provide better integration with the Elyra ecosystem.

References

• Related PR: RHOAIENG-18582, RHAIENG-1960: delete our copy of bootstrapper.py post ODH-Elyra release v4.3.0 #2555
• Discussion: RHOAIENG-18582, RHAIENG-1960: delete our copy of bootstrapper.py post ODH-Elyra release v4.3.0 #2555 (comment)
• Requested by: @jiridanek

[jiridanek]

• RHOAIENG-18582, RHAIENG-1960: delete our copy of bootstrapper.py post ODH-Elyra release v4.3.0 #2555 (comment)

[jiridanek]

Follows up on

• 🐛 Python 3.12 not supported in bootstrapper version check #1348
• 📦 Consolidate duplicate bootstrapper implementations across Python 3.12 runtime environments #1349