fix(ios): Guard replay postInit behind runtime session replay check #12337

Job	Run time
Ready-to-merge gate / Missing "ready-to-merge" label	3s
diff_check / diff_check	9s
Build legacy ios production dynamic-frameworks	10m 13s
Build new android production no-frameworks	12m 25s
Build new ios production no-frameworks	11m 2s
Build legacy android dev no-frameworks	8m 59s
Build legacy macos production no-frameworks	6m 18s
Build legacy ios dev no-frameworks	9m 9s
Build new android dev no-frameworks	12m 6s
Build legacy macos dev no-frameworks	6m 1s
Build legacy ios production no-frameworks	9m 52s
Build legacy android production no-frameworks	10m 10s
Build new ios dev no-frameworks	10m 38s
Build legacy ios dev dynamic-frameworks	9m 40s
Test ios production REV2	4m 31s
Test android production REV2	6m 34s
	2h 7m 50s

Provide feedback