Changing disabled label attributes via raw editor.

[dvkruchinin]

My actions before raising this issue

• Read/searched the docs
• Searched past issues

Expected Behaviour

Disabled label attributes should not be changed via the raw editor

Current Behaviour

Disabled label attributes are changed via the raw editor except for the attribute name. If change the name, an error of 500 is returned.

django.db.utils.IntegrityError: duplicate key value violates unique constraint "engine_attributespec_pkey"       
DETAIL:  Key (id)=(<attributes_id>) already exists.

Possible Solution

Disable the ability to change disabled label attributes via the raw editor.

Steps to Reproduce (for bugs)

1. Create a task with a label with an attribute (one attribute is enough)
2. Go to Raw tab.
3. Try to change attribute name. Error 500 is returned
4. Try to change parameters:
   input_type
   mutable

Context

Your Environment

• Git hash commit (git log -1): 70a9071
• Docker version docker version (e.g. Docker 17.0.05): 20.10.5
• Are you using Docker Swarm or Kubernetes? No
• Operating System and version (e.g. Linux, Windows, MacOS): Windows 10
• Code example or link to GitHub repo or gist to reproduce problem:
• Other diagnostic information / logs:
  Logs from `cvat` container

Next steps

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