fix: plugin svg icon sanitization (#817)

* fix(security)(components): unsanitized svg content injected via `dangerouslys

The plugin icon renderer fetches SVG text from `/api/plugins/.../assets/...` and injects it directly into the DOM using `dangerouslySetInnerHTML` after only checking that the payload starts with `<svg`. This does not remove malicious attributes/elements (e.g., event handlers, scriptable SVG payloads), enabling DOM-based XSS if a plugin asset is malicious or compromised.

Affected files: PluginIcon.tsx

Signed-off-by: tuanaiseo <221258316+tuanaiseo@users.noreply.github.com>

* fix: sanitize plugin svg icons

---------

Signed-off-by: tuanaiseo <221258316+tuanaiseo@users.noreply.github.com>
Co-authored-by: tuanaiseo <tuanaiseo@gmail.com>
Co-authored-by: Simos Mikelatos <simosmik@gmail.com>

package-lock.json

@@ -39,6 +39,7 @@
         "cmdk": "^1.1.1",
         "cors": "^2.8.5",
         "cross-spawn": "^7.0.3",
+        "dompurify": "^3.4.7",
         "express": "^4.18.2",
         "fuse.js": "^7.0.0",
         "gray-matter": "^4.0.3",
@@ -4580,6 +4581,13 @@
         "@types/node": "*"
       }
     },
+    "node_modules/@types/trusted-types": {
+      "version": "2.0.7",
+      "resolved": "https://registry.npmjs.org/@types/trusted-types/-/trusted-types-2.0.7.tgz",
+      "integrity": "sha512-ScaPdn1dQczgbl0QFTeTOmVHFULt394XJgOQNoyVhZ6r2vLnMLJfBPd53SB52T/3G36VI1/g2MZaX0cwDuXsfw==",
+      "license": "MIT",
+      "optional": true
+    },
     "node_modules/@types/unist": {
       "version": "3.0.3",
       "resolved": "https://registry.npmjs.org/@types/unist/-/unist-3.0.3.tgz",
@@ -7485,6 +7493,15 @@
         "node": ">=0.10.0"
       }
     },
+    "node_modules/dompurify": {
+      "version": "3.4.7",
+      "resolved": "https://registry.npmjs.org/dompurify/-/dompurify-3.4.7.tgz",
+      "integrity": "sha512-2jBxDJY4RR06tQNy4w5FlFH7kfxsQZlufd0sbv+chfHCxeJwrFw2baUDsSwvBISD4K4RDbd0PTfy3uNXsR6siA==",
+      "license": "(MPL-2.0 OR Apache-2.0)",
+      "optionalDependencies": {
+        "@types/trusted-types": "^2.0.7"
+      }
+    },
     "node_modules/dot-prop": {
       "version": "5.3.0",
       "resolved": "https://registry.npmjs.org/dot-prop/-/dot-prop-5.3.0.tgz",