feat: update desired_session_count field name to replicas

[ironAiken2]

Checklist: (if applicable)

• Mention to the original issue
• Documentation
• Minium required manager version
• Specific setting for review (eg., KB link, endpoint or how to setup)
• Minimum requirements to check during review
• Test case(s) to demonstrate the difference of before/after

[ironAiken2]

• feat: update desired_session_count field name to replicas #2963 👈 (View in Graphite)
• main

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[github-actions]

Coverage report for ./react

St.❔	Category	Percentage	Covered / Total
🔴	Statements	5.2%	398/7655
🔴	Branches	4.43% (-0.03% 🔻)	237/5355
🔴	Functions	3.1%	78/2519
🔴	Lines	5.12%	383/7486

Test suite run success

124 tests passing in 14 suites.

Report generated by 🧪jest coverage report action from ea9696c