[FIX] base_multi_company: search with in operator

When searching the company with a domain like [("company_id", "in", [1,
False]) to include records which are shared between companies we won't
get those with no companies at all. That will lead to logical errors in
several workflows.

TT51779

base_multi_company/models/multi_company_abstract.py

@@ -87,7 +87,7 @@ def _patch_company_domain(self, args):
         if args is None:
             args = []
         for arg in args:
-            if type(arg) == list and arg[:2] == ["company_id", "in"]:
+            if type(arg) in {list, tuple} and list(arg[:2]) == ["company_id", "in"]:
                 fix = []
                 for _i in range(len(arg[2]) - 1):
                     fix.append("|")
@@ -115,3 +115,10 @@ def _name_search(
     def search_read(self, domain=None, fields=None, offset=0, limit=None, order=None):
         new_domain = self._patch_company_domain(domain)
         return super().search_read(new_domain, fields, offset, limit, order)
+
+    @api.model
+    def search(self, args, offset=0, limit=None, order=None, count=False):
+        args = self._patch_company_domain(args)
+        return super().search(
+            args, offset=offset, limit=limit, order=order, count=count
+        )

base_multi_company/tests/test_multi_company_abstract.py

@@ -111,6 +111,13 @@ def test_search_company_id(self):
         )
         self.assertEqual([{"id": self.record_1.id, "name": self.record_1.name}], result)
 
+    def test_search_in_false_company(self):
+        """Records with no company are shared across companies but we need to convert
+        those queries with an or operator"""
+        self.record_1.company_ids = False
+        result = self.test_model.search([("company_id", "in", [1, False])])
+        self.assertEqual(result, self.record_1)
+
     def test_patch_company_domain(self):
         new_domain = self.test_model._patch_company_domain(
             [["company_id", "in", [False, self.company_2.id]]]