Add translation for ECX group parameter #1107

Job	Run time
basic_clang	4m 10s
basic_gcc	4m 11s
check-ansi	1m 56s
address_ub_sanitizer	10m 51s
check_update	59s
enable_non-default_options	3m 36s
fips_and_ktls	4m 18s
legacy	3m 40s
memory_sanitizer	26m 44s
minimal	2m 6s
no-deprecated	3m 51s
no-legacy	4m 16s
non-caching	4m 14s
no-shared (ubuntu-latest)	3m 10s
no-shared (macos-latest)	6m 5s
ntls_address_ub_sanitizer	9m 35s
ntls_memory_sanitizer	17m 55s
symbol_prefix-test	6m 59s
threads_sanitizer	3m 26s
buildtest	6m 46s
EC_POINTs_api_test	18m 45s
external-test-pyca (1.51.0, 3.9)	1m 27s
ntls-with-fips	7m 56s
ntls-without-sm234	6m 54s
out-of-source-and-install (ubuntu-latest)	4m 31s
out-of-source-and-install (macos-latest)	7m 12s
phe_test	35m 52s
zkp-test	6h 0m 15s
	9h 31m 40s

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