Fix automatic adding complex bridge

[codecov[bot]]

Codecov Report

Patch coverage: 87.50% and project coverage change: +0.51 :tada:

Comparison is base (ffb0c61) 83.60% compared to head (6a8a346) 84.11%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #313 +/- ## ========================================== + Coverage 83.60% 84.11% +0.51% ========================================== Files 41 41 Lines 2190 2185 -5 ========================================== + Hits 1831 1838 +7 + Misses 359 347 -12 ``` | [Impacted Files](https://app.codecov.io/gh/jump-dev/SumOfSquares.jl/pull/313?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=jump-dev) | Coverage Δ | | |---|---|---| | [src/constraint.jl](https://app.codecov.io/gh/jump-dev/SumOfSquares.jl/pull/313?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=jump-dev#diff-c3JjL2NvbnN0cmFpbnQuamw=) | `83.47% <84.61%> (+8.07%)` | :arrow_up: | | [src/variable.jl](https://app.codecov.io/gh/jump-dev/SumOfSquares.jl/pull/313?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=jump-dev#diff-c3JjL3ZhcmlhYmxlLmps) | `82.85% <100.00%> (ø)` | | ... and [1 file with indirect coverage changes](https://app.codecov.io/gh/jump-dev/SumOfSquares.jl/pull/313/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=jump-dev)

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