Home/End jumped to the first/last chat until InnerWidget's key handling
was rewritten from a switch into an if/else chain (in 'Extract chats list
accessibility, fix build'), which carried over only Up/Down and Page
Up/Down and dropped the Home/End cases.
Re-add them, skipping by the actual total row count (which selectSkip()
clamps) instead of the previous 1<<20 constant, so it lands on the first
or last row in both the default list and the filtered/search results.
Reza Bakhshi Laktasaraei
54b9a6b41e