Enhance errors showing for the new Magento 2 Block dialog window

[bohdan-harniuk]

Is your feature request related to a problem? Please describe.

Now, when creating new Magento 2 Block, if there is any error, it is displayed in the separate modal dialog. When this dialog is closed, main dialog is closed too. So, to create new Magento 2 Block, user have to repeat everything but considering what was said in that error message dialog. It is not user friendly and requires extra operations.

Describe the solution you'd like (*)

1. show error messages under the target fields
2. do not close a generation dialog after failed validation

[m2-assistant]

Hi @bohdan-harniuk. Thank you for your report.
To speed up processing of this issue, make sure that you provided sufficient information.

Add a comment to assign the issue: @magento I am working on this

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[bohdan-harniuk]

@magento I am working on this