ci: reduce merge conflict potential in CircleCI config (#8951)

We currently have two jobs commented out in ENT because we don't have the test
target configured there. So having the filter attached to one of those jobs
means changes to filters always create a merge conflict.

.circleci/config/workflows/build-test.yml

@@ -16,8 +16,11 @@ jobs:
             - /^.-ui\b.*/
             - /^docs-.*/
             - stable-website
+
+    # Note: comment-out this job in ENT
   - build-darwin-binaries:
       filters: *backend_check_branches_filter
+
   - test-e2e:
       filters: *backend_check_branches_filter
 
@@ -28,7 +31,19 @@ jobs:
             - stable-website
             - /^docs-.*/
 
+    # Note: comment-out this job in ENT
   - test-windows:
+      filters:
+        branches:
+          ignore:
+            - /^.-ui\b.*/
+            - /^docs-.*/
+            - /^e2e-.*/
+            - stable-website
+
+  - test-machine:
+      name: "test-client"
+      test_packages: "./client/..."
       # test branches are the branches that can impact unit tests
       filters: &backend_test_branches_filter
         branches:
@@ -37,10 +52,6 @@ jobs:
             - /^docs-.*/
             - /^e2e-.*/
             - stable-website
-  - test-machine:
-      name: "test-client"
-      test_packages: "./client/..."
-      filters: *backend_test_branches_filter
   - test-machine:
       name: "test-nomad"
       test_packages: "./nomad/..."