Document evaluation options for JavaScript client methods

[devin-ai-integration]

Document evaluation options for JavaScript client methods

This PR adds documentation for the evaluation options that can be passed to methods like checkGate, getDynamicConfig, getExperiment, and getLayer.

Changes

• Created a new file _evaluationOptions.mdx to document method options
• Added documentation for disableExposureLog option
• Added documentation for userPersistedValues option for experiments
• Updated the JavaScript SDK documentation to include the new section

Context

This addresses undocumented options that exist in the codebase but weren't fully documented in the docs site. These options are important for users who need to control exposure logging or implement persistent experiment assignments.

Link to Devin run: https://app.devin.ai/sessions/e4356647bbb84f41938f98e9528d0299
Requested by: [email protected]

[devin-ai-integration]

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[jasonwzm]

🚀 Deployed on https://680197a7e9f6903635e9deff--cozy-fox-0defec.netlify.app

[tore-statsig]

only use relative links to other documentation like: /client/concepts/persistent_assignment#example-usage

Also remove the existing exposure logging disabled docs file

[tore-statsig]

build fails - something is still relying on the manual exposures doc. can you update it to rely on the new method options doc

It might be react or another sdk which would require a slightly different doc (e.g. the react hooks have different parameters)

[tore-statsig]

Actually, I think we need to update this. The persistent assignment is documented here

https://docs.statsig.com/server/concepts/persistent_assignment/

And we want to keep it there since it is advanced. But each sdk repository should note the evaluation options that you can use, but likely only needs to give the disable exposure logging example, and keep the persistent assignment examples in that other doc