fix(root): disable multi-manager support for ReSukiSU

.github/actions/root-setup/action.yml

@@ -102,3 +102,10 @@ runs:
       with:
         config_list: |
           CONFIG_KSU=y
+
+    - name: Disable multi-manager for ReSukiSU
+      if: inputs.flavor == 'resukisu'
+      uses: ./.github/actions/set-kernel-config
+      with:
+        config_list: |
+          CONFIG_KSU_MULTI_MANAGER_SUPPORT=n