Fix deprecation warnings in NetworkEventUtilTest #39636

Job	Run time
set_release_type	2s
check_code_changes	10s
lint	1m 55s
build_android	12m 53s
prebuild_apple_dependencies	0s
prebuild_react_native_core	0s
test_ios_rntester_dynamic_frameworks	0s
test_ios_rntester_ruby_3_2_0	0s
build_debugger_shell	0s
test_ios_helloworld_with_ruby_3_2_0	0s
test_ios_rntester	0s
test_ios_helloworld	0s
test_e2e_ios_rntester	0s
test_e2e_ios_rntester_retry_1	0s
test_e2e_ios_rntester_retry_2	0s
test_js (24)	3m 25s
build_fantom_runner	10m 0s
test_js (22.13.0)	3m 41s
build_js_types	1m 5s
run_fantom_tests / test	1m 52s
build_npm_package	2m 29s
test_e2e_android_rntester / test (debug)	7m 57s
test_e2e_android_rntester / test (release)	7m 20s
run_fantom_tests / report	4s
run_fantom_tests_retry_1 / test	1m 54s
test_android_helloworld (Debug)	4m 47s
test_android_helloworld (Release)	5m 23s
test_e2e_android_templateapp / test (release)	7m 35s
test_e2e_android_templateapp / test (debug)	7m 29s
test_e2e_ios_templateapp_retry_1	0s
test_e2e_ios_templateapp	0s
test_e2e_ios_templateapp_retry_2	-1s
run_fantom_tests_retry_1 / report	2s
run_fantom_tests_retry_2 / test	1m 46s
run_fantom_tests_retry_2 / report	2s
test_e2e_android_rntester / report	2s
test_e2e_android_rntester_retry_2	0s
test_e2e_android_rntester_retry_1	0s
test_e2e_android_templateapp / report	2s
test_e2e_android_templateapp_retry_2	-1s
test_e2e_android_templateapp_retry_1	-1s
	1h 21m 52s

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