Bug report: Operations requires double-click but doesn't mention this

**Describe the bug**
I'm finding that when I click an operation (like "To Base64"), nothing happens.
I later discovered that double-clicking the operation caused the operation to be added to the recipe, but I didn't expect that to be required at first.

**To Reproduce**
1. Open CyberChef
2. Click on an operation (like "To Base64")
3. Observe that nothing appears to happen
4. Double-click that operation
5. See that after double-clicking the operation, it gets added to the recipe

**Expected behaviour**
At step 3 I was expecting the operation to appear (like in step 5) without having to double-click the operation.

Is this intended?

If it's not feasible to make single-click work (perhaps other people are accustomed to it not adding the operation to the recipe), it could be nice if the tooltip could mention that double-click is required.

Thanks

Reproduce the behavior in CyberChef by opening the app, clicking an operation such as "To Base64," and then double-clicking it. Inspect the operation list interaction and its tooltip, then confirm the chosen behavior is communicated or works on a single click without breaking the existing recipe flow.

Written by the indexing model from the issue text.