Fix dataProvider hooks do not handle pageInfo when updating 'getList' query cache

[slax57]

Problem:
The dataProvider hooks useUpdate, useUpdateMany, useDelete and useDeleteMany directly updates the 'getList' result when successful, but they did not handle the pageInfo. This lead to a pagination bug in EE module ra-editable-datagrid.

Bonus problem:
It also appears that the 'getList' cache was incorrectly populated by useUpdateMany, because fed with the list of ids as data, instead of the record data.

This lead to having cached values like:

{ id: 1, bar: 'baz', "0": 1, "1": 2 }

instead of:

{ id: 1, bar: 'baz' }

Solution:

• All 4 hooks have been fixed to handle the pageInfo correctly
  • Notice: for now the value of this prop is determined in a very basic way: we just copy what was previously in cache. It might be doable to implement a more clever solution, but this seemed good enough to me for now...
• The 4 hooks now use the real GetListResult type
• useUpdateMany now calls updateCache with the proper data
• unit tests have been added to all 4 hooks to ensure the cache is set properly

[djhi]

👍