Change default llm llama model to a little one (#3072)

CVS-172985
Change the default model to the first in list as in other models and a
small one (tiny-llama-1b-chat instead qwen2.5-14b-instruct)

Author: aleksandr-mokrov

notebooks/llm-rag-langchain/llm-rag-langchain-genai.ipynb

@@ -309,7 +309,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 5,
+   "execution_count": null,
    "id": "184d1678-0e73-4f35-8af5-1a7d291c2e6e",
    "metadata": {},
    "outputs": [
@@ -334,7 +334,7 @@
     "\n",
     "llm_model_id = widgets.Dropdown(\n",
     "    options=llm_model_ids,\n",
-    "    value=llm_model_ids[-1],\n",
+    "    value=llm_model_ids[0],\n",
     "    description=\"Model:\",\n",
     "    disabled=False,\n",
     ")\n",

notebooks/llm-rag-langchain/llm-rag-langchain.ipynb

@@ -299,7 +299,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 4,
+   "execution_count": null,
    "id": "184d1678-0e73-4f35-8af5-1a7d291c2e6e",
    "metadata": {},
    "outputs": [
@@ -324,7 +324,7 @@
     "\n",
     "llm_model_id = widgets.Dropdown(\n",
     "    options=llm_model_ids,\n",
-    "    value=llm_model_ids[-1],\n",
+    "    value=llm_model_ids[0],\n",
     "    description=\"Model:\",\n",
     "    disabled=False,\n",
     ")\n",

notebooks/llm-rag-llamaindex/llm-rag-llamaindex.ipynb

@@ -309,7 +309,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 5,
+   "execution_count": null,
    "id": "184d1678-0e73-4f35-8af5-1a7d291c2e6e",
    "metadata": {},
    "outputs": [
@@ -334,7 +334,7 @@
     "\n",
     "llm_model_id = widgets.Dropdown(\n",
     "    options=llm_model_ids,\n",
-    "    value=llm_model_ids[-1],\n",
+    "    value=llm_model_ids[0],\n",
     "    description=\"Model:\",\n",
     "    disabled=False,\n",
     ")\n",