fix: Add error handling to local evaluation flag poller

[tyiuhc]

Summary

Add error handling to local evaluation flag poller. If there is an exception when polling for flag configs, the most recent flag configs are used

Checklist

• [X] Does your PR title have the correct title format?
• Does your PR have a breaking change?: No

[github-actions[bot]]

:tada: This PR is included in version 1.2.4 :tada:

The release is available on:

• v1.2.4
• GitHub release

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