Spike [handlers]: Merge preview and build queries into one

[agualis]

Description

Please include a summary of the change and if relevant which issue is fixed. Please also include
relevant motivation and context.

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as
  expected)
• Dependency changes
• Code refactor / cleanup
• Documentation or wording changes
• Other

How should this be tested?

Please provide instructions so we can test. Please also list any relevant details for your test
configuration.

• Test A
• Test B

Visual context

Please provide any relevant visual context for UI changes or additions. This could be static
screenshots or a loom screencast.

Checklist:

• I have performed a self-review of my own code
• I have requested at least 1 review (If the PR is significant enough, use best judgement here)
• I have commented my code where relevant, particularly in hard-to-understand areas
• If package-lock.json has changes, it was intentional.

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Name	Status	Preview	Comments	Updated (UTC)
frontend-v3	❌ Failed (Inspect)			Jan 15, 2024 0:26am

[agualis]

Closed by #211