HTCXR XR Elite does not load the android editor in XR Mode

### Tested versions

- Reproducible https://github.com/godotengine/godot/commit/db66bd35af704fe0d83ba9348b8c50a48e51b2ba

### System information

HTC XR Elite

### Issue description

The HTC XR Elite does not load the editor in XR. The editor works in "flat" editor mode.

See also Bastian's commentary on how to implement on the manifests. https://github.com/godotengine/godot/issues/97907

Split from https://github.com/godotengine/godot/issues/97907

### Steps to reproduce

1. Download from github actions the android editor build
2. Notice that there is not htcvive xrelite build
3. The XRElite can run the android flat build
3. The XRElite fails in android openxr

### Minimal reproduction project (MRP)

https://github.com/user-attachments/files/17271320/demo-bug.zip

Start by reproducing the failure with the Android editor build on an HTC XR Elite using the linked demo-bug.zip project. Read the commentary in issue 97907 for the manifest implementation guidance. Done means the Android editor loads successfully in XR/OpenXR mode on the XR Elite while flat mode continues to work.

Written by the indexing model from the issue text.