List of sources is truncated in deletion confirmation dialog when source count is high

[zenmonkeykstop]

Description

With a large number of sources selected, the text displayed in the deletion dialog that includes journalist designations may be truncated at the bottom, hiding some JDs.

Steps to Reproduce

• select 150+ sources and click the Delete Sources button

Expected Behavior

dialog displays consistently without text overruns

Actual Behavior

(see screenshot)

Comments

[zenmonkeykstop]

Marking this as a blocker because we shouldn't obscure the warning text in that dialog.