Fix similar for Tuple

[blegat]

When we do a * b and a is uses Tuple as container, we should switch to Vector so that it can be mutated. similar isn't defined for Tuple anyway so this is currently a MethodError

[codecov[bot]]

Codecov Report

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

Project coverage is 85.93%. Comparing base (c01cd3f) to head (941cfca).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #51 +/- ## ========================================== + Coverage 85.85% 85.93% +0.08% ========================================== Files 14 14 Lines 693 697 +4 ========================================== + Hits 595 599 +4 Misses 98 98 ``` | [Flag](https://app.codecov.io/gh/JuliaAlgebra/StarAlgebras.jl/pull/51/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=JuliaAlgebra) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/JuliaAlgebra/StarAlgebras.jl/pull/51/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=JuliaAlgebra) | `85.93% <100.00%> (+0.08%)` | :arrow_up: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=JuliaAlgebra#carryforward-flags-in-the-pull-request-comment) to find out more.

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