Use of `.data` where tidyselect should now be used.

Currently, the package uses the `.data$...` pattern a lot for both selection and "data-masking". It should only be used for data masking. At this point, it's only a warning and making the changes would be pretty invasive. Since this work is migrating to hydrofab, it's probably a won't fix, but wanted to document the issue here as it shows up as a lot of warnings in the tests.