0.10.9: square Sync button on model, registry, decision and Graph pages

aspect-ratio with a stretched height left the width at the icon's size.
Fixed sizes instead: 33px beside the model switch, 29px in the Graph
header.

package.json

@@ -2,7 +2,7 @@
   "name": "archify-vscode-ext",
   "displayName": "Archify Diagram Viewer",
   "description": "Archify diagrams in VS Code. Write diagrams as .archify files in YAML: they open as the interactive diagram, with live updates, validation, templates and completion. Also previews Archify's own JSON files (*.architecture.json, …) and opens rendered Archify HTML.",
-  "version": "0.10.8",
+  "version": "0.10.9",
   "publisher": "root-at-skic",
   "license": "MIT",
   "sponsor": {