autofill custom preset always uses `"custom"` as its value

[lewxdev]

Expected behavior

When using the autofill custom preset, I expect the input field to fill with the custom preset value of the most recent value

Actual behavior

When using the autofill custom preset, I see the input field fill with the custom preset value: "custom"

Steps to reproduce

1. install the extension
2. open the popup
3. in the Settings tab, submit any valid email address
4. in the Generate tab, select the custom preset toggle
5. in the Generate tab, in the detail field, enter any text (other than "custom")
6. in the browser, on a focused input field, select the Subify autofill... → custom context menu
7. observe the resulting subaddress detail does NOT use the previously entered custom detail

Version

3.0.0

Environment

Microsoft Edge 129.0.2792.89 (Official build) (arm64)

Additional details

No response