New RStudio version (2022.07.1 ) breaks --ds-tab-gradient-light

[grcatlin]

Hi again! Much like #24, --ds-tab-gradient-light is broken in newer RStudio version (on Macs at least).

This is solved by adding .GND-IWGDCJ to the following section in the darkstudio.css file:

/* gradient in files pane that displays when path is too long */
.rstudio-themes-flat
  .rstudio-themes-dark-grey
  .breadcrumb
  :-webkit-any(.GD15MCFCCJ, .GGBOEFPDCJ, .GCHYANPCCJ, .GND-IWGDCJ) {
  background: var(--ds-tab-gradient-light);
}