fix: correct (better ?) handling of hotwater for senso

[codecov-commenter]

Codecov Report

All modified lines are covered by tests :white_check_mark:

Comparison is base (f1f283f) 98.45% compared to head (c89e44a) 98.45%.

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #116 +/- ## ======================================= Coverage 98.45% 98.45% ======================================= Files 27 27 Lines 1940 1942 +2 ======================================= + Hits 1910 1912 +2 Misses 30 30 ``` | [Files](https://app.codecov.io/gh/thomasgermain/pymultiMATIC/pull/116?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Thomas+Germain) | Coverage Δ | | |---|---|---| | [pymultimatic/model/dhw.py](https://app.codecov.io/gh/thomasgermain/pymultiMATIC/pull/116?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Thomas+Germain#diff-cHltdWx0aW1hdGljL21vZGVsL2Rody5weQ==) | `100.00% <100.00%> (ø)` | | | [pymultimatic/model/mapper.py](https://app.codecov.io/gh/thomasgermain/pymultiMATIC/pull/116?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Thomas+Germain#diff-cHltdWx0aW1hdGljL21vZGVsL21hcHBlci5weQ==) | `96.62% <100.00%> (+0.01%)` | :arrow_up: |

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