Lambda captures do not work with qualified column names

[findepi]

This works:

select transform(ARRAY[1], x -> x + a) from (values 1) u(a);
-- output: 2

But this does not:

select transform(ARRAY[1], x -> x + u.a) from (values 1) u(a);
-- line 1:37: Column 'u' cannot be resolved

FYI: @martint @haozhun @sopel39

[sopel39]

waits for release to complete before merging #9099 again