Test: Strategy-config Unit tests

## Description
Write unit tests for new strategy config features.
https://github.com/Layr-Labs/eigenlayer-contracts/pull/392

### Action Items
- [ ] Write tests for different configs for `thirdPartyTransfersForbidden`
- [ ] Write tests for admin setters
- [ ] Get @wadealexc @gpsanant to review
- [ ] Squash and merge pr into `m2-mainnet-fixes`

### Blocking Issues
None