Fix styles for tag selection

src/app/components/shared/_dialogs/create-comment/create-comment.component.html

@@ -8,7 +8,7 @@
   </mat-form-field>
   <mat-form-field *ngIf="tags !== null">
 
-    <mat-label>{{ 'comment-page.tag' || translate }}</mat-label>
+    <mat-label>{{ 'comment-page.tag' | translate }}</mat-label>
     <mat-select [(ngModel)]="selectedTag" class="comment-tag">
       <mat-option *ngFor="let tag of tags" value="{{tag}}">{{tag}}</mat-option>
     </mat-select>

src/app/components/shared/_dialogs/create-comment/create-comment.component.scss

@@ -50,3 +50,14 @@ mat-hint {
   background-color: var(--on-surface)!important;
 }
 
+::ng-deep .mat-select-arrow-wrapper .mat-select-arrow {
+  color: var(--on-surface);
+}
+
+::ng-deep .mat-select-value-text {
+  color: var(--on-surface);
+}
+
+::ng-deep .mat-primary .mat-option.mat-selected:not(.mat-option-disabled) {
+  color: var(--primary);
+}