Reuse protos-job TS stubs in mobile OTA jobs instead of regenerating

The protos job already emits the grpc-web TS stubs to app/proto/gen/ts/proto
and the mobile OTA jobs pull that artifact in via needs, so copy the stubs in
rather than re-downloading protoc and running ci-build-protos.sh.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Author: aapeliv

app/.gitlab-ci.yml

@@ -855,7 +855,9 @@ build:mobile-ota:
   script:
     - cd app/mobile
     - npm ci
-    - npm run build:protos
+    # protos are generated by the `protos` job and pulled in via `needs`; copy the
+    # grpc-web TS stubs in rather than re-downloading protoc and regenerating.
+    - mkdir -p proto && cp -a ../proto/gen/ts/proto/. proto/
     - npx expo config --type public --json > ota-expo-config.json
     - |
       for P in $OTA_PLATFORMS; do
@@ -961,7 +963,9 @@ build:mobile-ota-staging:
   script:
     - cd app/mobile
     - npm ci
-    - npm run build:protos
+    # protos are generated by the `protos` job and pulled in via `needs`; copy the
+    # grpc-web TS stubs in rather than re-downloading protoc and regenerating.
+    - mkdir -p proto && cp -a ../proto/gen/ts/proto/. proto/
     - npx expo config --type public --json > ota-expo-config.json
     - |
       for P in $OTA_PLATFORMS; do