[Cases] Update io-ts types as strict (#156813)

## Summary

This PR fixes #156156

It uses` io-ts strict` type to remove unnecessary attributes.


### Checklist

- [x] [Unit or functional
tests](https://www.elastic.co/guide/en/kibana/master/development-tests.html)
were updated or added to match the most common scenarios

### For maintainers

- [x] This was checked for breaking API changes and was [labeled
appropriately](https://www.elastic.co/guide/en/kibana/master/contributing.html#kibana-release-notes-process)

---------

Co-authored-by: kibanamachine <42973632+kibanamachine@users.noreply.github.com>
Co-authored-by: Jonathan Buttner <jonathan.buttner@elastic.co>
Co-authored-by: Christos Nasikas <christos.nasikas@elastic.co>

x-pack/plugins/cases/common/api/cases/alerts.test.ts

@@ -0,0 +1,46 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License
+ * 2.0; you may not use this file except in compliance with the Elastic License
+ * 2.0.
+ */
+
+import { AlertResponseRt } from './alerts';
+
+describe('Alerts', () => {
+  describe('AlertResponseRt', () => {
+    it('has expected attributes in request', () => {
+      const defaultRequest = [{ id: '1', index: '2', attached_at: '3' }];
+
+      const query = AlertResponseRt.decode(defaultRequest);
+
+      expect(query).toStrictEqual({
+        _tag: 'Right',
+        right: defaultRequest,
+      });
+    });
+
+    it('multiple attributes in request', () => {
+      const defaultRequest = [
+        { id: '1', index: '2', attached_at: '3' },
+        { id: '2', index: '3', attached_at: '4' },
+      ];
+      const query = AlertResponseRt.decode(defaultRequest);
+
+      expect(query).toStrictEqual({
+        _tag: 'Right',
+        right: defaultRequest,
+      });
+    });
+
+    it('removes foo:bar attributes from request', () => {
+      const defaultRequest = [{ id: '1', index: '2', attached_at: '3' }];
+      const query = AlertResponseRt.decode([{ ...defaultRequest[0], foo: 'bar' }]);
+
+      expect(query).toStrictEqual({
+        _tag: 'Right',
+        right: defaultRequest,
+      });
+    });
+  });
+});

x-pack/plugins/cases/common/api/cases/alerts.ts

@@ -7,7 +7,7 @@
 
 import * as rt from 'io-ts';
 
-const AlertRt = rt.type({
+const AlertRt = rt.strict({
   id: rt.string,
   index: rt.string,
   attached_at: rt.string,

x-pack/plugins/cases/common/api/cases/assignee.test.ts

@@ -0,0 +1,41 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License
+ * 2.0; you may not use this file except in compliance with the Elastic License
+ * 2.0.
+ */
+
+import { CaseAssigneesRt } from './assignee';
+
+describe('Assignee', () => {
+  describe('CaseAssigneesRt', () => {
+    const defaultRequest = [{ uid: '1' }, { uid: '2' }];
+
+    it('has expected attributes in request', () => {
+      const query = CaseAssigneesRt.decode(defaultRequest);
+
+      expect(query).toStrictEqual({
+        _tag: 'Right',
+        right: defaultRequest,
+      });
+    });
+
+    it('removes foo:bar attributes from request', () => {
+      const query = CaseAssigneesRt.decode([{ ...defaultRequest[0], foo: 'bar' }]);
+
+      expect(query).toStrictEqual({
+        _tag: 'Right',
+        right: [defaultRequest[0]],
+      });
+    });
+
+    it('removes foo:bar attributes from assignees', () => {
+      const query = CaseAssigneesRt.decode([{ uid: '1', foo: 'bar' }, { uid: '2' }]);
+
+      expect(query).toStrictEqual({
+        _tag: 'Right',
+        right: [{ uid: '1' }, { uid: '2' }],
+      });
+    });
+  });
+});