Eclipse Theia v1.73.0

[ndoschek]

Hey everyone 👋,

The Eclipse Theia v1.73.0 release is scheduled for 2026-06-25.

Please use the Endgame issue below to track what’s included.
If you have any nearly-complete PRs that should to be part of the release, please mention it in the endgame issue before we start:

• Endgame Plan for 1.73.x #17691

We'll post updates when the release begins and again once it’s finished.
Please avoid merging pull requests until we confirm the release is complete.

[ndoschek]

The release will start now. We'll post an update once it has completed.
Please avoid merging pull requests until we confirm the release is complete.

[ndoschek]

The 1.73.0 release has completed, thank you to everyone that participated and contributed!