[gitlab-org/gitlab] Rename `fill_in_and_submit_hand_raise_lead` helper to use `expect_` prefix to fix RSpec/NoExpectationExample cop

### ROOT CAUSE The issue arises because the helper method `fill_in_and_submit_hand_raise_lead` is used in tests without any RSpec expectations, triggering the RSpec/NoExpectationExample cop. Renaming the method to `expect_fill_in_and_submit_hand_raise_lead` makes it clear that it includes expectations, thus resolving the cop's warning. ### CODE FIX To fix the issue, rename the helper method to include the `expect_` prefix and ensure it contains the necessary RSpec expectations.

ruby
# Before
def fill_in_and_submit_hand_raise_lead
  # implementation without expectations
end

# After
def expect_fill_in_and_submit_hand_raise_lead
  expect { fill_in_and_submit_hand_raise_lead }.to raise_error
end


However, since the exact implementation isn't provided, the key change is renaming the method:

diff
- def fill_in_and_submit_hand_raise_lead
+ def expect_fill_in_and_submit_hand_raise_lead