display tags by str instead of repr in circuit diagrams

[richrines1]

addresses #6411

as described in this comment it might also be nice to allow tags to define their own _circuit_diagram_info_ magic method - happy to add this (either here or in a follow up) if this would be preferred

[xXxH3LIOSxXx]

@richrines1 - This looks good to me considering the context of the title and considering no issues with refreshing the branch to current.

Regarding implementation of _circuit_diagram_info_ for tags and whether that should be added to this PR, I defer to @pavoljuhas on this. My 2c is that that makes more sense as a separate issue where we can discuss what that may look like and then triage accordingly.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.79%. Comparing base (1bec6b5) to head (160ef83).

❗ Current head 160ef83 differs from pull request most recent head 302bce0. Consider uploading reports for the commit 302bce0 to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #6530   +/-   ##
=======================================
  Coverage   97.79%   97.79%           
=======================================
  Files        1124     1124           
  Lines       95486    95468   -18     
=======================================
- Hits        93376    93359   -17     
+ Misses       2110     2109    -1     

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[pavoljuhas]

LGTM, with a small suggestion to use map for brevity.

As for the _circuit_diagram_info_ - I feel it would be better to add in a separate PR.
Thank you for contributing this!