[Glitch] Fix report dialog being illegible using mastodon-light theme

Port 040961e3f8 to glitch-soc

Signed-off-by: Claire <claire.github-309c@sitedethib.com>

app/javascript/flavours/glitch/styles/mastodon-light/diff.scss

@@ -229,15 +229,21 @@
 .mute-modal,
 .block-modal,
 .report-modal,
+.report-dialog-modal,
 .embed-modal,
 .error-modal,
 .onboarding-modal,
 .report-modal__comment .setting-text__wrapper,
-.report-modal__comment .setting-text {
+.report-modal__comment .setting-text,
+.report-dialog-modal__textarea {
   background: $white;
   border: 1px solid lighten($ui-base-color, 8%);
 }
 
+.report-dialog-modal .dialog-option .poll__input {
+  color: $white;
+}
+
 .report-modal__comment {
   border-right-color: lighten($ui-base-color, 8%);
 }