refactor: Update PromptComponent post_code_processing method

Refactor the post_code_processing method in the PromptComponent class to improve code readability and maintainability. The changes include:

- Import the process_prompt_template function from langflow.base.prompts.api_utils.
- Import the update_template_values function from langflow.template.utils.
- Call the process_prompt_template function to update the template value.
- Update the frontend_node with any values set in the current_build_config.
- Remove unnecessary comments and whitespace.

These changes enhance the overall quality of the code and make it easier to understand and maintain.

src/backend/base/langflow/components/prompts/Prompt.py

@@ -1,6 +1,8 @@
+from langflow.base.prompts.api_utils import process_prompt_template
 from langflow.custom import Component
 from langflow.io import Output, PromptInput
 from langflow.schema.message import Message
+from langflow.template.utils import update_template_values
 
 
 class PromptComponent(Component):
@@ -23,3 +25,20 @@ class PromptComponent(Component):
         prompt = await Message.from_template_and_variables(**self._attributes)
         self.status = prompt.text
         return prompt
+
+    def post_code_processing(self, new_build_config: dict, current_build_config: dict):
+        """
+        This function is called after the code validation is done.
+        """
+        frontend_node = super().post_code_processing(new_build_config, current_build_config)
+        template = frontend_node["template"]["template"]["value"]
+        _ = process_prompt_template(
+            template=template,
+            name="template",
+            custom_fields=frontend_node["custom_fields"],
+            frontend_node_template=frontend_node["template"],
+        )
+        # Now that template is updated, we need to grab any values that were set in the current_build_config
+        # and update the frontend_node with those values
+        update_template_values(frontend_template=frontend_node, raw_template=current_build_config["template"])
+        return frontend_node