tui_spec: improve "TUI paste: exactly 64 bytes" (#11086)

Doing the screen test first might give insights about a possible
(flaky?) failure, where it looks like "feed_data" is processed out of
order:

    [  ERROR   ] test/functional/terminal/tui_spec.lua @ 561: TUI paste: exactly 64 bytes #10311
    test/functional/helpers.lua:388:
    retry() attempts: 490
    test/functional/terminal/tui_spec.lua:66: Expected objects to be the same.
    Passed in:
    (table: 0x44042de8) {
     *[1] = ' endzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz' }
    Expected:
    (table: 0x41d6e568) {
     *[1] = 'zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz end' }
    stack traceback:
            test/functional/helpers.lua:388: in function 'retry'
            test/functional/terminal/tui_spec.lua:63: in function 'expect_child_buf_lines'
            test/functional/terminal/tui_spec.lua:569: in function <test/functional/terminal/tui_spec.lua:561>

Ref: https://github.com/neovim/neovim/pull/11083#issuecomment-534375201
Build log: https://travis-ci.org/neovim/neovim/jobs/588749739#L5597

0 files changed, 0 insertions, 0 deletions