SO-5406 freeze retired resources

[cmark]

This PR ensures that retired resources cannot be versioned and their contents cannot be edited unless their status changes back to something else than retired.

[apeteri]

👍

[codecov-commenter]

Codecov Report

Merging #1007 (f272752) into 8.x (d86e0f2) will decrease coverage by 0.00%.
The diff coverage is 28.57%.

❗ Current head f272752 differs from pull request most recent head 7d8589d. Consider uploading reports for the commit 7d8589d to get more accurate results

@@             Coverage Diff              @@
##                8.x    #1007      +/-   ##
============================================
- Coverage     64.68%   64.67%   -0.01%     
- Complexity    12156    12158       +2     
============================================
  Files          1702     1703       +1     
  Lines         56615    56628      +13     
  Branches       5267     5270       +3     
============================================
+ Hits          36621    36625       +4     
- Misses        17760    17769       +9     
  Partials       2234     2234              

Impacted Files	Coverage Δ
...src/com/b2international/snowowl/core/Resource.java	86.36% <ø> (ø)
...owowl/core/context/TerminologyResourceRequest.java	65.71% <0.00%> (-1.94%)	⬇️
...request/TerminologyResourceStatusCheckRequest.java	0.00% <0.00%> (ø)
...quest/TerminologyResourceCommitRequestBuilder.java	75.00% <50.00%> (-25.00%)	⬇️
...ore/context/DefaultTerminologyResourceContext.java	100.00% <100.00%> (ø)
...owl/core/request/version/VersionCreateRequest.java	83.58% <100.00%> (+0.24%)	⬆️
...index/src/com/b2international/index/es/EsNode.java	81.25% <0.00%> (-1.05%)	⬇️
...ernational/snowowl/internal/eventbus/EventBus.java	68.31% <0.00%> (+0.49%)	⬆️

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