Update Product UI to Replace Devices with RemoteInstances

### Description

- Update UI labels, dashboards, menus, and settings to reflect the new terminology.
- Ensure pipelines, device groups, and other workflows align with Remote Instances naming.
- Test product to confirm no broken references or regressions due to renaming.

### Epic/Story

#6695

### Have you provided an initial effort estimate for this issue?

I have provided an initial effort estimate

Start by searching the product UI for existing “Devices” labels and references across dashboards, menus, settings, pipelines, and device groups. Review each affected workflow and test the product for broken references or regressions. Done means the relevant UI consistently uses “Remote Instances” and the workflows remain functional.

Written by the indexing model from the issue text.