fix: [pool-manager] Verify the LP tokens are sent on WithdrawLiquidit…

[0xFable]

…y #313

Fixes #313

Description and Motivation

Related Issues

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Checklist:

• [ ] I have read Migaloo's contribution guidelines.
• [ ] My pull request has a sound title and description (not something vague like Update index.md)
• [ ] All existing and new tests are passing.
• [ ] I updated/added relevant documentation.
• [ ] The code is formatted properly cargo fmt --all --.
• [ ] Clippy doesn't report any issues cargo clippy -- -D warnings.
• [ ] I have regenerated the schemas if needed cargo schema.

[codecov[bot]]

Codecov Report

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

Project coverage is 88.56%. Comparing base (f1fdf5b) to head (a42267e). Report is 24 commits behind head on release/v2_contracts.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## release/v2_contracts #324 +/- ## ======================================================== + Coverage 88.50% 88.56% +0.06% ======================================================== Files 252 243 -9 Lines 23602 23582 -20 ======================================================== - Hits 20888 20885 -3 + Misses 2714 2697 -17 ```

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