Moving resolver settings to repo variables

[malhotra5]

End-user friendly description of the problem this fixes or functionality that this introduces

• [ ] Include this change in the Release Notes. If checked, you must provide an end-user friendly description for your change below

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Give a summary of what the PR does, explaining any non-trivial design decisions

Updating openhands/resolver/examples/openhands-resolver.yml to rely on repo variables for custom settings

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Link of any specific issues this addresses

5041