🐛 Fix some text without setted color

frontend/src/app/main/ui/components/forms.scss

@@ -362,6 +362,7 @@
   min-height: $s-32;
   border-radius: $br-8;
   padding: $s-0 $s-2;
+  color: var(--input-foreground-color);
   &:focus,
   &:focus-within {
     outline: none;

frontend/src/app/main/ui/export.scss

@@ -126,7 +126,7 @@
     }
     .selection-title {
       @include titleTipography;
-      color: $df-primary;
+      color: var(--modal-text-foreground-color);
     }
   }
   .selection-wrapper {

frontend/src/app/main/ui/onboarding.scss

@@ -64,6 +64,7 @@
 
 .modal-text {
   @include titleTipography;
+  color: var(--modal-text-foreground-color);
 }
 
 .property-block {

frontend/src/app/main/ui/workspace/sidebar/shortcuts.scss

@@ -195,6 +195,7 @@
   }
   .not-found {
     @include titleTipography;
+    color: var(--empty-message-foreground-color);
     margin: $s-12;
   }
 }