Minor contract fixes

[naddison36]

Changes

• Fix OETHPlumeVault override of the internal _mint
• Fixed error message in Curve AMO setMaxSlippage
• Removed extra FactoryRemoved events from removeFactory on PoolBoostCentralRegistry
• Fixed param order in DripRateUpdated event

Code Change Checklist

To be completed before internal review begins:

• The contract code is complete
• Executable deployment file
• Fork tests that test after the deployment file runs
• Unit tests *if needed
• 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
- [ ] Contract constructors have correct arguments
- [ ] 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

[codecov]

Codecov Report

❌ Patch coverage is 0% with 4 lines in your changes missing coverage. Please review.
✅ Project coverage is 44.36%. Comparing base (6f80e57) to head (fec9d4c).

Files with missing lines	Patch %	Lines
contracts/contracts/harvest/FixedRateDripper.sol	0.00%	1 Missing ⚠️
...acts/contracts/strategies/BaseCurveAMOStrategy.sol	0.00%	1 Missing ⚠️
...ontracts/contracts/strategies/CurveAMOStrategy.sol	0.00%	1 Missing ⚠️
contracts/contracts/vault/OETHPlumeVault.sol	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2815      +/-   ##
==========================================
- Coverage   45.06%   44.36%   -0.71%     
==========================================
  Files         105      105              
  Lines        4500     4499       -1     
  Branches     1228     1228              
==========================================
- Hits         2028     1996      -32     
- Misses       2469     2500      +31     
  Partials        3        3              

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