chore: add changeset for v3.28.7 (#8268)

.changeset/v3.28.7.md

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+---
+"roo-cline": patch
+---
+
+![3.28.7 Release - Hidden Thinking](/releases/3.28.7-release.png)
+
+- UX: Collapse thinking blocks by default with UI settings to bring them back (thanks @brunobergher!)
+- Fix: Resolve checkpoint restore popover positioning issue (#8219 by @NaccOll, PR by @app/roomote)
+- Add cloud account switcher functionality (thanks @mrubens!)
+- Add support for zai-org/GLM-4.5-turbo model in Chutes provider (#8155 by @mugnimaestra, PR by @app/roomote)