feat(storage): read only transactions (#6417)

feat(storage): read only transactions for queries (#6415)

* fix: tests

* bastle wie en grosse

* fix(database): scan as callback

* fix tests

* fix merge failures

* remove as of system time

* refactor: remove unused test

* refacotr: remove unused lines

internal/query/domain_policy_test.go

@@ -54,7 +54,7 @@ func Test_DomainPolicyPrepares(t *testing.T) {
 			name:    "prepareDomainPolicyQuery no result",
 			prepare: prepareDomainPolicyQuery,
 			want: want{
-				sqlExpectations: mockQueries(
+				sqlExpectations: mockQueriesScanErr(
 					regexp.QuoteMeta(prepareDomainPolicyStmt),
 					nil,
 					nil,
@@ -117,7 +117,7 @@ func Test_DomainPolicyPrepares(t *testing.T) {
 					return nil, true
 				},
 			},
-			object: nil,
+			object: (*DomainPolicy)(nil),
 		},
 	}
 	for _, tt := range tests {