feat: modify ACL of advanced settings when switching feature flag.

[SuZhou-Joe]

Description

Issues Resolved

Screenshot

Testing the changes

Check List

• All tests pass
  • yarn test:jest
  • yarn test:jest_integration
  • yarn test:ftr
• New functionality includes testing.
• New functionality has been documented.
• Update CHANGELOG.md
• Commits are signed per the DCO using --signoff

[codecov-commenter]

Codecov Report

Merging #110 (ba7910f) into workspace (220bb9d) will decrease coverage by 0.01%.
The diff coverage is 0.00%.

@@              Coverage Diff              @@
##           workspace     #110      +/-   ##
=============================================
- Coverage      65.77%   65.76%   -0.01%     
=============================================
  Files           3337     3337              
  Lines          64497    64503       +6     
  Branches       10267    10269       +2     
=============================================
- Hits           42421    42419       -2     
- Misses         19500    19507       +7     
- Partials        2576     2577       +1     

Flag	Coverage Δ
Linux_1	34.75% <ø> (ø)
Linux_3	42.63% <0.00%> (-0.02%)	⬇️
Windows_1	34.77% <ø> (ø)
Windows_2	54.73% <0.00%> (-0.02%)	⬇️
Windows_3	42.64% <0.00%> (-0.01%)	⬇️
Windows_4	34.73% <0.00%> (-0.01%)	⬇️

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Files Changed	Coverage Δ
...erver/saved_objects/service/lib/repository.mock.ts	100.00% <ø> (ø)
...ore/server/saved_objects/service/lib/repository.ts	81.75% <0.00%> (-0.93%)	⬇️
...re/server/ui_settings/saved_objects/ui_settings.ts	33.33% <ø> (ø)

... and 1 file with indirect coverage changes

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