Support autotenant toggling on MT-enabled classes

[parkerduckworth]

Reconfigure.multi_tenancy.auto_tenant_creation can now be updated with class updates, toggling auto tenant creation on/off

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 95.00000% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 95.03%. Comparing base (339f7ad) to head (cd14f92).

Files	Patch %	Lines
integration/test_tenants.py	88.88%	1 Missing :warning:

Additional details and impacted files

@@             Coverage Diff              @@
##           dev/1.25    #1035      +/-   ##
============================================
+ Coverage     95.00%   95.03%   +0.03%     
============================================
  Files           175      175              
  Lines         18022    18039      +17     
============================================
+ Hits          17122    17144      +22     
+ Misses          900      895       -5     

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