fix: feature flag pollingInterval wrong init

[xahhy]

Changes

Fix wrong feature flags poller init of the pollingInterval. Which will cause serious unlimited API calling with no interval time

We use the featureFlagsPollingInterval variable when init it. but used the wrong pollingInterval when actually init it.

this.featureFlagsPoller = new FeatureFlagsPoller({
                featureFlagsPollingInterval:
                    typeof options.featureFlagsPollingInterval === 'number'
                        ? options.featureFlagsPollingInterval
                        : FIVE_MINUTES,
                personalApiKey: options.personalApiKey,
                projectApiKey: apiKey,
                timeout: options.timeout || false,
                host: this.host,
                featureFlagCalledCallback,
            })

...

Checklist

• [ ] Tests for new code (if applicable)
• [ ] TypeScript definitions (module.d.ts) updated and in sync with library exports (if applicable)