Turn on v2 API in production

[juliawu]

Turns ON the use_v2_api feature flag in production.

[gemini-code-assist]

Summary of Changes

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This pull request updates the production feature flag configuration to enable the V2 API while simultaneously disabling the new ranking page UI to ensure system stability and correct feature deployment.

Highlights

• Feature Flag Update: Enabled the use_v2_api feature flag in the production environment.
• UI Configuration: Disabled the new_ranking_page feature flag in the production environment.

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[gemini-code-assist]

Code Review

This pull request modifies production feature flags by disabling the new_ranking_page flag and enabling the use_v2_api flag. The reviewer noted that disabling the new_ranking_page flag contradicts the PR's intent and suggested keeping it enabled.

[gemini-code-assist]

Disabling the new_ranking_page feature flag contradicts the PR title and description, which only mention enabling the use_v2_api flag. This change will disable the new ranking page UI in production.

Suggested change

	"enabled": false,
	"enabled": true,