Introduce StatefulSpan and MutableSpannableLayout for safe span state isolation #38758

Job	Run time
lint	2m 4s
check_code_changes	11s
set_release_type	3s
build_android	33m 43s
build_debugger_shell	0s
prebuild_apple_dependencies	0s
test_ios_rntester	0s
prebuild_react_native_core	0s
test_ios_helloworld_with_ruby_3_2_0	0s
test_ios_rntester_dynamic_frameworks	0s
test_ios_rntester_ruby_3_2_0	0s
test_ios_helloworld	-1s
test_e2e_ios_rntester	-1s
test_e2e_ios_rntester_retry_1	-1s
test_e2e_ios_rntester_retry_2	0s
build_fantom_runner	12m 21s
test_js (24)	3m 24s
build_js_types	1m 2s
test_js (20.19.4)	3m 31s
test_js (22)	3m 38s
run_fantom_tests / test	3m 0s
run_fantom_tests / report	4s
run_fantom_tests_retry_1	0s
run_fantom_tests_retry_2	0s
test_e2e_android_rntester / test (debug)	6m 52s
test_e2e_android_rntester / test (release)	6m 45s
test_e2e_android_templateapp	0s
build_npm_package	0s
test_e2e_android_templateapp_retry_2	0s
test_e2e_android_templateapp_retry_1	0s
test_e2e_ios_templateapp_retry_1	0s
test_android_helloworld	0s
test_e2e_ios_templateapp	0s
test_e2e_ios_templateapp_retry_2	0s
test_e2e_android_rntester / report	4s
test_e2e_android_rntester_retry_2	0s
test_e2e_android_rntester_retry_1	0s
	1h 16m 39s

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