chore: Remove redundant fast-uri resolution (#13146)

The `fast-uri@npm:^3.0.1` resolution was redundant. The ^3.0.1 range
naturally resolves to 3.1.4 without the resolution override, so removing
it produces identical yarn.lock output and does not introduce any new
vulnerabilities per `yarn npm audit --severity high --recursive
--environment production`.

All other resolutions remain necessary either to prevent lower/vulnerable
versions from being installed transitively or to enforce a single package
version required for TypeScript type consistency (React, Koa,
prosemirror-transform, markdown-it types).

Co-authored-by: Claude <noreply@anthropic.com>

package.json

@@ -382,7 +382,6 @@
     "ws@npm:~8.17.1": "^8.21.0",
     "uuid": "^11.1.1",
     "nodemailer@npm:9.0.0": "^9.0.1",
-    "fast-uri@npm:^3.0.1": "3.1.4",
     "linkify-it@npm:5.0.1": "5.0.2"
   },
   "version": "1.9.1",

yarn.lock

@@ -11160,7 +11160,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"fast-uri@npm:3.1.4":
+"fast-uri@npm:^3.0.1":
   version: 3.1.4
   resolution: "fast-uri@npm:3.1.4"
   checksum: 10c0/f90948821ceb49980f64f89b8216ba498f5957f26035be813526a55b6145d26cbd63ef5618d5205a3292b31edc9c08589749350cd72bd86c7095eb434dceb757