Is your feature request related to a problem? Please describe.
As described in #12629 in some cases it is impossible to finish installation of an add-on when upgrading because previous version of the add-on cannot be removed. While in such case log contains a warning explaining what went wrong this is not as discoverable as it could be.
Describe the solution you'd like
NVDA should show a graphical warning when installation of one or more add-ons failed possibly explaining why it was impossible to install them - the more details the better.
Describe alternatives you've considered
Leave code as is
Additional context
Stems from discussion in #12792
Is your feature request related to a problem? Please describe.
As described in #12629 in some cases it is impossible to finish installation of an add-on when upgrading because previous version of the add-on cannot be removed. While in such case log contains a warning explaining what went wrong this is not as discoverable as it could be.
Describe the solution you'd like
NVDA should show a graphical warning when installation of one or more add-ons failed possibly explaining why it was impossible to install them - the more details the better.
Describe alternatives you've considered
Leave code as is
Additional context
Stems from discussion in #12792