Fix build.yml - Update tag generator to not use `beta` (#2800)

.github/workflows/build.yml

@@ -324,10 +324,7 @@ jobs:
           IMAGE_TAG=$(echo "${GITHUB_REF:11}" | sed "s#/#-#g")  # slash safe branch name
           if [[ "$IMAGE_TAG" == "master" ]]; then
             IMAGE_TAG=dev
-          elif [[ "$IMAGE_TAG" == "rc" ]] || [[ "$IMAGE_TAG" == "hotfix-rc" ]]; then
-            IMAGE_TAG=beta
           fi
-
           echo "image_tag=$IMAGE_TAG" >> $GITHUB_OUTPUT
 
       - name: Setup project name