Fixes related to MPL drawer

[MatteoRobbiati]

Thanks @sergiomtzlosa for the fixes already done in #1438. We can keep that PR to solve the coverage problems and use this one to fix asap the errors.

Checklist:

• Reviewers confirm new code works as expected.
• Tests are passing.
• Coverage does not decrease (this is expected to decrease since we will fix it in Matplotlib drawer: fix bug #1437 and add tests #1438).
• Documentation is updated.

[sergiomtzlosa]

great @MatteoRobbiati just let me know to get hands on

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 9 lines in your changes missing coverage. Please review.

Project coverage is 97.10%. Comparing base (7864590) to head (bf626f5).
Report is 118 commits behind head on master.

Files with missing lines	Patch %	Lines
src/qibo/ui/mpldrawer.py	0.00%	9 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1444      +/-   ##
==========================================
- Coverage   99.94%   97.10%   -2.84%     
==========================================
  Files          78       81       +3     
  Lines       11324    11653     +329     
==========================================
- Hits        11318    11316       -2     
- Misses          6      337     +331     

Flag	Coverage Δ
unittests	97.10% <0.00%> (-2.84%)	⬇️

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[renatomello]

@MatteoRobbiati I can't merge it since coverage is not passing. Idk if you have the right level of authorization for that or if it's just @scarrazza

[scarrazza]

Coverage is failing, correct?

[renatomello]

Coverage is failing, correct?

If I understood correctly, coverage fix is being implemented in #1438

[sergiomtzlosa]

Coverage is failing, correct?

If I understood correctly, coverage fix is being implemented in #1438

Yes, you are right

[MatteoRobbiati]

Yes, correct. With this we fix errors and with the other one we can fix coverage. If you prefer, we can fix everything there, but that will take a bit more time.

[renatomello]

Yes, correct. With this we fix errors and with the other one we can fix coverage. If you prefer, we can fix everything there, but that will take a bit more time.

I'd prefer if this is merged as is, so other PRs can move forward while #1438 fixes the coverage.

[scarrazza]

I agree, thanks.