WOETH: Withdraw OETH in surplus.

[clement-ux]

Allow the governor to withdraw the OETH that has been sent in surplus to the wrapper.

Code Change Checklist

To be completed before internal review begins:

• [x] The contract code is complete
• [x] Executable deployment file
• [x] Fork tests that test after the deployment file runs
• [x] Unit tests *if needed
• [x] The owner has done a full checklist review of the code + tests

Internal review:

• [ ] Two approvals by internal reviewers

Deploy checklist

Two reviewers complete the following checklist:

- [ ] All deployed contracts are listed in the deploy PR's description
- [ ] Deployed contract's verified code (and all dependencies) match the code in master
- [ ] The transactions that interacted with the newly deployed contract match the deploy script.
- [ ] Governance proposal matches the deploy script
- [ ] Smoke tests pass after fork test execution of the governance proposal

[github-actions[bot]]

	Warnings
:warning:	:eyes: This PR needs at least 2 reviewers

Generated by :no_entry_sign: dangerJS against 4a12161fc17ec2526251b09eec9dc4c43d147f23

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 62.78%. Comparing base (56d0b7d) to head (4a12161).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## sparrowDom/woeth_hack_proof #2119 +/- ## =============================================================== + Coverage 62.76% 62.78% +0.02% =============================================================== Files 66 66 Lines 3373 3375 +2 Branches 657 873 +216 =============================================================== + Hits 2117 2119 +2 Misses 1253 1253 Partials 3 3 ```

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[openzeppelin-code[bot]]

WOETH: Withdraw OETH in surplus.

Generated at commit: 4a12161fc17ec2526251b09eec9dc4c43d147f23

🚨 Report Summary

	Severity Level	Results
Contracts	Critical High Medium Low Note Total	3 3 0 18 42 66
Dependencies	Critical High Medium Low Note Total	0 0 0 0 0 0

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For more details view the full report in OpenZeppelin Code Inspector