[R-pkg-team] Bug#1102589: r-cran-broom.helpers / r-cran-cards not in testing

[Rebecca N. Palmer]

There are two reasons why this package still hasn't migrated, both of 
which will go away if (as proposed, see debian-r discussion from 
2025-03/2025-04) r-cran* are made 64-bit only:

- This package depends on r-cran-cards, which fails its autopkgtest on 
i386 (probably due to x87 excess precision, though I have not checked that).
- This package also test-depends on r-cran-glmmtmb, which is now 
explicitly 64-bit only.