Spinner not hidden on error

[davidst]

Describe the bug
If an exception is thrown from the server when creating/updating/deleting a row, then the spinner is still displayed
over the grid and the error message cannot be seen.

To Reproduce
Steps to reproduce the behavior:

1. Go to the create/update/delete page on a grid
2. Make sure the server will throw an exception when saving
3. Click on the Save button
4. See the spinner instead of the error message on the grid

Expected behavior
The spinner should be hidden and the error message should be displayed on the create/update/delete page when an exception is thrown from the server.

[gustavnavar]

GridBlazor 2.1.12 has a fix for this issue

[davidst]

A fix so fast! Thank you for your great job and the awesome project!