docs(Analytics): Adding examples for v23

[Bilal-Abdeen]

Description

Related issues

Release Summary

Checklist

• I read the Contributor Guide and followed the process outlined there for submitting PRs.
  • [x ] Yes
• My change supports the following platforms;
  • [x ] Android
  • [x ] iOS
  • [x ] Other (macOS, web)
• My change includes tests;
  • e2e tests added or updated in packages/\*\*/e2e
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• I have updated TypeScript types that are affected by my change.
• This is a breaking change;
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  • [ x] No

Test Plan

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Note

Low Risk
Low risk documentation-only change that updates code samples for the newer v22+ modular Analytics API. Risk is limited to potential user confusion if examples are incorrect or inconsistent with the actual SDK.

Overview
Updates docs/analytics/usage/index.md to split multiple snippets into version-specific examples: <= v21 using instance methods (e.g., analytics().logEvent) and >= v22 using the modular API (e.g., getAnalytics() + logEvent(analytics, ...)).

Also adjusts related examples for logSelectContent, getAppInstanceId, setAnalyticsCollectionEnabled, setConsent, and replaces the Other/Web debug guidance for v22+ with setLogLevel('debug'|'verbose') instead of globalThis.RNFBDebug.

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Code Review

This pull request updates the documentation to include code examples for the modular API introduced in React Native Firebase version 22. The review feedback identifies a syntax error in the logEvent example and incorrect API usage for setting log levels, providing suggestions to ensure consistency with the modular API.

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[mikehardy]

Hmm let me think on this one - I appreciate the PR and we definitely can use all the help we can get keeping documentation up to date, but I don't like the cognitive load implied by a big bunch of conditionals "if RNFB < this version" etc

I think I'd prefer to just update them all to the modular APIs, and have one note at the top indicating that the examples all use the modular APIs vs the deprecated namespaced ones since those are slated for removal shortly.

[Bilal-Abdeen]

Removed old examples (before v22)