Polish #6070

[teunbrand]

This PR fixes #6211.

Briefly, a few mistakes crept into #6070, which this PR rectifies.
The reverse parameter is now passed along in panel parameters so that we can opt-out for guide calculations.

devtools::load_all("~/packages/ggplot2")
#> ℹ Loading ggplot2

p <- ggplot(mpg, aes(displ, hwy)) +
  geom_point() +
  theme(axis.line = element_line())

p + coord_cartesian(reverse = "xy")

For #6211 (comment), note that plot is now correctly centered and 'hwy' title is placed reasonably.

p + coord_radial(
  start = 0.25 * pi, end = 0.75 * pi,
  reverse = "thetar", inner.radius = 0.3
)

^{Created on 2024-12-04 with reprex v2.1.1}