minor fixes

[joamatab]

• some parts were not fully refactored

[sourcery-ai]

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[codecov]

Codecov Report

Attention: Patch coverage is 79.74684% with 16 lines in your changes are missing coverage. Please review.

Project coverage is 68.58%. Comparing base (d572adf) to head (a29657a).

Files	Patch %	Lines
gdsfactory/components/straight_heater_meander.py	33.33%	3 Missing and 1 partial ⚠️
gdsfactory/components/spiral_heater.py	76.92%	2 Missing and 1 partial ⚠️
gdsfactory/components/component_sequence.py	0.00%	2 Missing ⚠️
gdsfactory/read/from_yaml.py	50.00%	2 Missing ⚠️
gdsfactory/write_cells.py	0.00%	2 Missing ⚠️
gdsfactory/add_ports.py	0.00%	1 Missing ⚠️
gdsfactory/component_layout.py	66.66%	1 Missing ⚠️
gdsfactory/routing/add_electrical_pads_top_dc.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2817      +/-   ##
==========================================
+ Coverage   68.32%   68.58%   +0.26%     
==========================================
  Files         300      300              
  Lines       15592    15584       -8     
  Branches     2276     2280       +4     
==========================================
+ Hits        10653    10689      +36     
+ Misses       4343     4297      -46     
- Partials      596      598       +2     

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