fix: OPITC-1354: [Incident] Table locks in prod SaaS causing degraded performance

[yyassi-heartex]

PR fulfills these requirements

• Commit message(s) and PR title follows the format [fix|feat|ci|chore|doc]: TICKET-ID: Short description of change made ex. fix: DEV-XXXX: Removed inconsistent code usage causing intermittent errors
• Tests for the changes have been added/updated (for bug fixes/features)
• Docs have been added/updated (for bug fixes/features)
• Best efforts were made to ensure docs/code are concise and coherent (checked for spelling/grammatical errors, commented out code, debug logs etc.)
• Self-reviewed and ran all changes on a local instance (for bug fixes/features)

Change has impacts in these area(s)

(check all that apply)

• Product design
• Backend (Database)
• Backend (API)
• Frontend

Describe the reason for change

update annotation result_count on annotation save so we dont need to get the json to calculate count

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[yyassi-heartex]

/git merge develop

Workflow run
Successfully merged: create mode 100644 docs/scripts/tableOfContent.js

[yyassi-heartex]

/git merge develop

Workflow run
Successfully merged: 12 files changed, 124 insertions(+), 320 deletions(-)

[codecov]

Codecov Report

Attention: Patch coverage is 75.00000% with 1 line in your changes missing coverage. Please review.

Project coverage is 76.77%. Comparing base (52aea5b) to head (b7dcaec).
Report is 2 commits behind head on develop.

Files with missing lines	Patch %	Lines
label_studio/tasks/models.py	75.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #6678      +/-   ##
===========================================
- Coverage    76.77%   76.77%   -0.01%     
===========================================
  Files          169      169              
  Lines        13876    13880       +4     
===========================================
+ Hits         10653    10656       +3     
- Misses        3223     3224       +1     

Flag	Coverage Δ
pytests	76.77% <75.00%> (-0.01%)	⬇️

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