AMI430 cleanup

[jenshnielsen]

• Don't trigger warnings when snapshotting a AMI430 without an enabled switch heater
• Deprecate confusing setter/getter methods that duplicate parameters
• Deprecate some more aliases

• News fragment

[codecov]

Codecov Report

Attention: Patch coverage is 78.12500% with 7 lines in your changes missing coverage. Please review.

Project coverage is 67.20%. Comparing base (e7dd669) to head (4eb64a7).

Files	Patch %	Lines
...strument_drivers/american_magnetics/AMI430_visa.py	78.12%	7 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #6306   +/-   ##
=======================================
  Coverage   67.19%   67.20%           
=======================================
  Files         352      352           
  Lines       32154    32175   +21     
=======================================
+ Hits        21607    21622   +15     
- Misses      10547    10553    +6     

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