fix: presets should not be allowed as a base model

src/routes/(app)/workspace/models/create/+page.svelte

@@ -290,7 +290,7 @@
 					<option value={null} class=" placeholder:text-gray-500"
 						>{$i18n.t('Select a base model')}</option
 					>
-					{#each $models as model}
+					{#each $models.filter((m) => !m?.preset) as model}
 						<option value={model.id}>{model.name}</option>
 					{/each}
 				</select>

src/routes/(app)/workspace/models/edit/+page.svelte

@@ -282,7 +282,7 @@
 							<option value={null} class=" placeholder:text-gray-500"
 								>{$i18n.t('Select a base model')}</option
 							>
-							{#each $models.filter((m) => m.id !== model.id) as model}
+							{#each $models.filter((m) => m.id !== model.id && !m?.preset) as model}
 								<option value={model.id}>{model.name}</option>
 							{/each}
 						</select>