chore: add changeset for v3.28.1 (#7916)

.changeset/v3.28.1.md

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+---
+"roo-cline": patch
+---
+
+![3.28.1 Release - Kangaroo riding rocket to the clouds](/releases/3.28.1-release.png)
+
+- Announce Roo Code Cloud!
+- Add cloud task button for opening tasks in Roo Code Cloud (thanks @app/roomote!)
+- Make Posthog telemetry the default (thanks @mrubens!)
+- Show notification when the checkpoint initialization fails (thanks @app/roomote!)
+- Bust cache in generated image preview (thanks @mrubens!)
+- Fix: Center active mode in selector dropdown on open (#7882 by @hannesrudolph, PR by @app/roomote)
+- Fix: Preserve first message during conversation condensing (thanks @daniel-lxs!)