test(invoice): add integration tests for invoice behaviors

- Fix schema ordering: move :journal-entry-line/running-balance to schema.edn
- Add invoice_behaviors_test.clj covering:
  - Permission gates (26.5, 26.6, 26.8)
  - Lock date blocking (27.1, 27.3)
  - New invoice validation (8.1, 8.5)
  - Edit invoice (11.1, 11.3)
  - Bulk edit (15.4)
  - Single/bulk void (16.3, 16.4, 17.1)
  - Unvoid restoring from history (18.1)
  - Undo autopay (19.1)
  - Invoice list filtering (2.6, 2.8, 2.10, 2.14)
  - Invoice list sorting (3.5, 3.7, 3.10)
  - Invoice list pagination (4.1, 4.3)
  - Legacy route redirects (28.1)
- Mock Solr in wrap-setup fixture to prevent Connection refused
- Fix setup-test-data to merge user-provided entities with defaults
- Fix InMemSolrClient.index_documents to handle entity IDs
- Fix ezcater_xls test to use dynamic entity IDs
- Update invoice.md behavior checklist with completed items

resources/cloud-migration-schema.edn

@@ -1,10 +1,4 @@
-[{:db/valueType :db.type/double,
-  :db/cardinality :db.cardinality/one,
-  :db/noHistory true
-  :db/doc "The cached running balance for the account this line item is for",
-  :db/ident :journal-entry-line/running-balance,
-  }
- {:db/valueType   :db.type/boolean,
+[{:db/valueType   :db.type/boolean,
   :db/cardinality :db.cardinality/one,
   :db/noHistory   true
   :db/doc         "Whether or not this journal entry line  is dirty and needs to recalculate balances",