ENG-1235: Enable triggering release-tagging workflow manually on-demand also

[AsadHasan-Rasa]

Proposed changes: Enable triggering release-tagging workflow manually on-demand also, in case previous auto-run(s) had failed, and we want to re-run on existing prepared-release- branch.

Status (please check what you already did):

• [x] made PR ready for code review
• [ ] added some tests for the functionality
• N/A
• [ ] updated the documentation in the rasaHQ/rasa
• N/A
• [ ] updated the changelog (please check changelog for instructions)
• N/A
• [ ] reformat files using ruff (please check Readme for instructions)
• N/A

[sanchariGr]

@AsadHasan-Rasa can you also please remove env.IS_TAG_BUILD from The notify success and failure notifications here?

[AsadHasan-Rasa]

@AsadHasan-Rasa can you also please remove env.IS_TAG_BUILD from The notify success and failure notifications here?

Done. If ok, I've also removed env.IS_TAG_BUILD from the failure notification (https://github.com/RasaHQ/rasa-sdk/blob/main/.github/workflows/release-artifacts.yml#L157), because iiuc the same pattern applies there also, and we want to be consistent?