Trajectory chart x-axis displays fractions of years

[MonikaFu]

For certain ranges of years the trajectory charts display dates such as 2021.5 (see reprex below).

library(r2dii.plot)
library(dplyr, warn.conflicts = FALSE)

data <- market_share %>%
  filter(
    sector == "power",
    technology == "renewablescap",
    region == "global",
    scenario_source == "demo_2020",
    between(year, 2020, 2030)
  )

plot_trajectory(data)
#> Normalizing `production` values to 2020 -- the start year.

^{Created on 2021-10-08 by the reprex package (v2.0.0)}

Desired behavior: only integers are shown on x-axis.