Revert "refactor: move common/lib/capa/capa to xmodule/capa" (#30762)

.github/workflows/unit-test-shards.json

@@ -261,6 +261,12 @@
     ]
   },
   "common-2": {
+    "settings": "lms.envs.test",
+    "paths": [
+      "common/lib/"
+    ]
+  },
+  "common-3": {
     "settings": "cms.envs.test",
     "paths": [
       "common/djangoapps/"

.github/workflows/unit-tests.yml

@@ -31,6 +31,7 @@ jobs:
             "cms-2",
             "common-1",
             "common-2",
+            "common-3",
             "xmodule-1"
         ]
 
@@ -61,7 +62,7 @@ jobs:
       - name: install requirements
         run: |
           sudo pip install -r requirements/pip.txt
-          sudo pip install --exists-action='w' -r requirements/edx/testing.txt
+          sudo pip install -r requirements/edx/testing.txt
           if [[ "${{ matrix.django-version }}" == "pinned" ]]; then
             sudo pip install -r requirements/edx/django.txt
           else

.github/workflows/verify-gha-unit-tests-count.yml

@@ -18,7 +18,7 @@ jobs:
       - name: install requirements
         run: |
           sudo pip install -r requirements/pip.txt
-          sudo pip install --exists-action='w' -r requirements/edx/testing.txt
+          sudo pip install -r requirements/edx/testing.txt
 
       - name: verify unit tests count
         uses: ./.github/actions/verify-tests-count