Re-use local variable to avoid extra FIRRemoteConfig accesses in RemoteConfigValueObservable

[ivanmoskalev]

The -[FIRRemoteConfig configValueForKey:] has been called twice in situations where this could have been avoided and an already existing local variable could be used instead.

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[ivanmoskalev]

/gemini review

[gemini-code-assist]

Code Review

The pull request aims to optimize the RemoteConfigValueObservable class by reusing the local configValue variable to avoid redundant calls to -[FIRRemoteConfig configValueForKey:]. This change improves efficiency by reducing the number of accesses to FIRRemoteConfig. The changes look good overall.

Summary of Findings

• Redundant Remote Config Accesses: The code was calling -[FIRRemoteConfig configValueForKey:] twice in scenarios where the result could have been stored in a local variable and reused. This PR addresses this inefficiency.

Merge Readiness

The changes in this pull request are straightforward and address a clear performance issue. The code is more efficient and maintainable. I recommend merging this pull request after addressing the minor suggestions. I am unable to directly approve this pull request, and recommend that others review and approve this code before merging.

[paulb777]

@ivanmoskalev Thanks for the PR!