Set the Type radiobuttons in the Add Dictionary Entry dialog to be arranged vertically rather than horizontally (#20347)
Temporary fix for #19657
Summary of the issue:
The "Type" radio buttons in the "Add Dictionary Entry" dialog were displayed on a single line, causing the dialog to stretch off screen.
Description of user facing changes:
These radio buttons are now displayed in a single column rather than a single row.
Description of developer facing changes:
None
Description of development approach:
Set the radiobox's style to wx.RA_SPECIFY_ROWS. Also added a call to self.CentreOnParent to properly centre the dialog on its parent.
Testing strategy:
Ran from source and checked that the radio buttons were arranged vertically and the dialog was centred on the speech dictionary dialog.