Missing styles for Cover block in 5.9

cover-styles.css

.wp-block-cover-image.has-background-dim.has-background-dim-10:not(.has-background-gradient)::before,
.wp-block-cover-image.has-background-dim.has-background-dim-10 .wp-block-cover__gradient-background,
.wp-block-cover.has-background-dim.has-background-dim-10:not(.has-background-gradient)::before,
.wp-block-cover.has-background-dim.has-background-dim-10 .wp-block-cover__gradient-background {
  opacity: 0.1;
}
.wp-block-cover-image.has-background-dim.has-background-dim-20:not(.has-background-gradient)::before,
.wp-block-cover-image.has-background-dim.has-background-dim-20 .wp-block-cover__gradient-background,
.wp-block-cover.has-background-dim.has-background-dim-20:not(.has-background-gradient)::before,
.wp-block-cover.has-background-dim.has-background-dim-20 .wp-block-cover__gradient-background {
  opacity: 0.2;
}
.wp-block-cover-image.has-background-dim.has-background-dim-30:not(.has-background-gradient)::before,
.wp-block-cover-image.has-background-dim.has-background-dim-30 .wp-block-cover__gradient-background,
.wp-block-cover.has-background-dim.has-background-dim-30:not(.has-background-gradient)::before,
.wp-block-cover.has-background-dim.has-background-dim-30 .wp-block-cover__gradient-background {
  opacity: 0.3;
}
.wp-block-cover-image.has-background-dim.has-background-dim-40:not(.has-background-gradient)::before,
.wp-block-cover-image.has-background-dim.has-background-dim-40 .wp-block-cover__gradient-background,
.wp-block-cover.has-background-dim.has-background-dim-40:not(.has-background-gradient)::before,
.wp-block-cover.has-background-dim.has-background-dim-40 .wp-block-cover__gradient-background {
  opacity: 0.4;
}
.wp-block-cover-image.has-background-dim.has-background-dim-50:not(.has-background-gradient)::before,
.wp-block-cover-image.has-background-dim.has-background-dim-50 .wp-block-cover__gradient-background,
.wp-block-cover.has-background-dim.has-background-dim-50:not(.has-background-gradient)::before,
.wp-block-cover.has-background-dim.has-background-dim-50 .wp-block-cover__gradient-background {
  opacity: 0.5;
}
.wp-block-cover-image.has-background-dim.has-background-dim-60:not(.has-background-gradient)::before,
.wp-block-cover-image.has-background-dim.has-background-dim-60 .wp-block-cover__gradient-background,
.wp-block-cover.has-background-dim.has-background-dim-60:not(.has-background-gradient)::before,
.wp-block-cover.has-background-dim.has-background-dim-60 .wp-block-cover__gradient-background {
  opacity: 0.6;
}
.wp-block-cover-image.has-background-dim.has-background-dim-70:not(.has-background-gradient)::before,
.wp-block-cover-image.has-background-dim.has-background-dim-70 .wp-block-cover__gradient-background,
.wp-block-cover.has-background-dim.has-background-dim-70:not(.has-background-gradient)::before,
.wp-block-cover.has-background-dim.has-background-dim-70 .wp-block-cover__gradient-background {
  opacity: 0.7;
}
.wp-block-cover-image.has-background-dim.has-background-dim-80:not(.has-background-gradient)::before,
.wp-block-cover-image.has-background-dim.has-background-dim-80 .wp-block-cover__gradient-background,
.wp-block-cover.has-background-dim.has-background-dim-80:not(.has-background-gradient)::before,
.wp-block-cover.has-background-dim.has-background-dim-80 .wp-block-cover__gradient-background {
  opacity: 0.8;
}
.wp-block-cover-image.has-background-dim.has-background-dim-90:not(.has-background-gradient)::before,
.wp-block-cover-image.has-background-dim.has-background-dim-90 .wp-block-cover__gradient-background,
.wp-block-cover.has-background-dim.has-background-dim-90:not(.has-background-gradient)::before,
.wp-block-cover.has-background-dim.has-background-dim-90 .wp-block-cover__gradient-background {
  opacity: 0.9;
}
.wp-block-cover-image.has-background-dim.has-background-dim-100:not(.has-background-gradient)::before,
.wp-block-cover-image.has-background-dim.has-background-dim-100 .wp-block-cover__gradient-background,
.wp-block-cover.has-background-dim.has-background-dim-100:not(.has-background-gradient)::before,
.wp-block-cover.has-background-dim.has-background-dim-100 .wp-block-cover__gradient-background {
  opacity: 1;
}