Keyboard dismisses immediately when tapping TextInput inside showDialog

[TheNoumanDev]

Description:
When using showDialog with a widget containing TextInput fields, the keyboard opens briefly and then immediately closes when tapping on a text field on a real device.

Steps to Reproduce:

• Create a widget with TextInput fields (e.g., a form with name, email fields)
• Show it using showDialog with style: none
• Tap on a text field
• Keyboard opens and immediately closes

Expected Behavior:

• Keyboard should stay open when tapping on a text field inside a dialog.

Root Cause Analysis:
The dialog_actions.dart does not handle keyboard insets like bottom_sheet_actions.dart does.