Fix handleSave Function to Ensure LinktaFlow is Properly Saved to Database

[kinskiwu]

Description
The handleSave function in the StaticLayout component is not correctly saving the LinktaFlow data to the database

Expected Behavior: When a user clicks "Save," the currentLinktaFlow should be fetched and the updated nodes and edges should be successfully saved to the database via the updateLinktaFlow mutation.

Acceptance Criteria

• Ensure currentLinktaFlow is properly fetched before attempting to save
• Update the logic to ensure handleSave properly triggers the mutation with valid nodes and edges

Subtasks