🔧 chore(llms.py): add format_openai_field method to format OpenAI field display names

The `format_openai_field` method formats the display name of fields that contain the string "openai" in their name. It capitalizes the first letter of "OpenAI", replaces underscores with spaces, and replaces "Api" with "API". This improves the readability and consistency of the display names of OpenAI fields.

src/backend/langflow/template/frontend_node/llms.py

@@ -5,6 +5,13 @@ from langflow.template.frontend_node.base import FrontendNode
 
 
 class LLMFrontendNode(FrontendNode):
+    @staticmethod
+    def format_openai_field(field: TemplateField):
+        if "openai" in field.name.lower():
+            field.display_name = (
+                field.name.title().replace("Openai", "OpenAI").replace("_", " ")
+            ).replace("Api", "API")
+
     @staticmethod
     def format_field(field: TemplateField, name: Optional[str] = None) -> None:
         display_names_dict = {
@@ -39,3 +46,5 @@ class LLMFrontendNode(FrontendNode):
         elif field.name in ["model_name", "temperature"]:
             field.advanced = False
             field.show = True
+
+        LLMFrontendNode.format_openai_field(field)