Support grayscale feature for non-properties namespaces(#4316)

[ywy-github]

What's the purpose of this PR

Support grayscale feature for non-properties namespaces

Which issue(s) this PR fixes:

Fixes #4316

Brief changelog

1. Non-properties namespace displays grayscale buttons.
   Modify src/main/resources/static/views/component/namespace-panel-master-tab.html
2. Non-properties namespace grayscale version displays the configuration Tab and hides the new configuration button.
   Modify src/main/resources/static/views/component/namespace-panel-branch-tab.html
3. When the non-properties namespace is modified, the key and type cannot be modified and the comment is hidden.
   Modify src/main/resources/static/views/component/item-modal.html
4. Modify the grayscale version of the Modify configuration dialog, showing modified configuration instead of new configuration.
   Modify src/main/resources/static/scripts/controller/config/ConfigNamespaceController.js

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• Write a pull request description that is detailed enough to understand what the pull request does, how, and why.
• Write necessary unit tests to verify the code.
• Run mvn clean test to make sure this pull request doesn't break anything.
• Update the CHANGES log.

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[codecov]

Codecov Report

Merging #4951 (48059b5) into master (99b76dc) will increase coverage by 0.09%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master    #4951      +/-   ##
============================================
+ Coverage     48.41%   48.50%   +0.09%     
- Complexity     1725     1728       +3     
============================================
  Files           346      346              
  Lines         10836    10836              
  Branches       1080     1080              
============================================
+ Hits           5246     5256      +10     
+ Misses         5265     5258       -7     
+ Partials        325      322       -3     

see 5 files with indirect coverage changes

[ywy-github]

recheck