feat(amazonq): pre-fetch next recommendations for inline completions

[zixlin7]

Problem

To support complex recommendations broken into multiple chunks, we need the ability to immediately show user next recommendation when they accept previous one

Solution

pre-fetch next recommendation predicting user accept first recommendation when showing them to user, and if user did accept first recommendation, immediately show next recommendation

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[github-actions]

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[Will-ShaoHua]

what's the purpose of it

[Will-ShaoHua]

nm, found it