fix: deduplicate task api call

[jonathanlab]

We were making 2 identical calls to the API for listing our tasks.
Each call takes around 3s, which meant loading the tasks in the sidebar took about 6🫲🤪 🫱7 seconds
This reduces it to one call

partially solves #1364 but i'll need a ID filter on the task endpoint to optimize this further

[jonathanlab]

• fix: deduplicate task api call #1939 👈 (View in Graphite)
• main

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[greptile-apps]

_{Reviews (1): Last reviewed commit: "fix: deduplicate task api call" | Re-trigger Greptile}