Add copy version number button to the about dialog (#18667)
Raised in
https://github.com/nvaccess/nvda/pull/15320#discussion_r2262427550
Summary of the issue:
There's no easy way for an NVDA user to copy the version information
from the about dialog
Description of user facing changes:
A button has been added to the about dialog to copy the version
information.
example `source-master-ed86524 (2025.3.0.0)`
Description of developer facing changes:
none
Description of development approach:
Added a button the message dialog
Testing strategy:
Tested by opening the about dialog and ensuring the version number is
copied
Known issues with pull request:
none
