withr 3.0.3

• Fixes for CRAN checks.

• Fixed issue that prevented local_seed() from preserving the seed (#286, @BjarkeHautop).

  Note: If you had before:

  test_that("A", {
    withr::local_seed(1)   # Seeds locally
    runif(...)
  })
  
  test_that("B", {
    runif(...)             # NO seed of its own
  })

  Before the fix, the test "B" was accidentally seeded by "A". Now it needs to be seeded on its own.