arrow

GH-43357: [R] Fix some lints (#43338)



### Rationale for this change

I'm building a new package to find and automatically fix lints in R code: [`flint`](https://flint.etiennebacher.com/).

I'm using real-life, large packages to check its performance and `arrow` is one of them. Since I already test on this, there's no additional cost for me in proposing those changes.

FYI, those changes were generated with `flint::fix_package(exclude_linters = "outer_negation")` (I excluded this linter because of https://github.com/etiennebacher/flint/issues/23).

### What changes are included in this PR?

There are many changes but most of them are trivial:
- replace `any(is.na())` by `anyNA()`
- add a leading 0 to decimal (e.g `.1` -> `0.1`)
- use `expect_named()` in tests
etc.

`flint` is quite new and linter rules are necessarily a bit opinionated, so some of those changes might not be to your taste.

### Are these changes tested?

They don't change any functionality.

### Are there any user-facing changes?

No.

* GitHub Issue: #43357

Authored-by: Etienne Bacher <52219252+etiennebacher@users.noreply.github.com>
Signed-off-by: Nic Crane <thisisnic@gmail.com>