Chore: ditch the abandoned ngx-bootstrap-icons, roll our own (#14665)

src-ui/src/app/components/common/custom-fields-dropdown/custom-fields-dropdown.component.html

@@ -1,6 +1,6 @@
 <div ngbDropdown #fieldDropdown="ngbDropdown" (openChange)="onOpenClose($event)" [popperOptions]="popperOptions">
     <button type="button" class="btn btn-sm btn-outline-primary" id="customFieldsDropdown" [disabled]="disabled" ngbDropdownToggle aria-label="Custom Fields" i18n-aria-label>
-      <i-bs name="ui-radios"></i-bs><div class="d-none d-lg-inline ms-1"><ng-container i18n>Custom Fields</ng-container></div>
+      <pngx-bs-icon name="ui-radios"></pngx-bs-icon><div class="d-none d-lg-inline ms-1"><ng-container i18n>Custom Fields</ng-container></div>
     </button>
     <div ngbDropdownMenu aria-labelledby="customFieldsDropdown" class="shadow custom-fields-dropdown">
         <div class="list-group list-group-flush" (keydown)="listKeyDown($event)">
@@ -16,7 +16,7 @@
             }
             @if (!filterText?.length || filteredFields.length === 0) {
                 <button type="button" class="list-group-item list-group-item-action bg-light" (click)="createField(filterText)" [disabled]="!canCreateFields" #button>
-                    <i-bs width=".9em" height=".9em" name="asterisk" class="me-1"></i-bs><ng-container i18n>Create new field</ng-container>
+                    <pngx-bs-icon width=".9em" height=".9em" name="asterisk" class="me-1"></pngx-bs-icon><ng-container i18n>Create new field</ng-container>
                 </button>
             }
         </div>