add locked to non-inheritable scale keys

[supersergiy]

Prevents locked from being inherited when creating info specs from references with inherit_all_params=True.

Some scales have "locked": true which should not carry over.

[macrintr]

lgtm

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.97%. Comparing base (75482e9) to head (db1b233).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1144   +/-   ##
=======================================
  Coverage   99.97%   99.97%           
=======================================
  Files         191      191           
  Lines        9922     9922           
=======================================
  Hits         9920     9920           
  Misses          2        2           

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