ICU-22746 Refactor some MF2 tests to be data-driven #2166

Job	Run time
clang-valgrind-test	10m 13s
clang-valgrind-intltest (utility)	6m 42s
clang-valgrind-intltest (normalize)	5m 53s
clang-valgrind-intltest (collator)	5m 7s
clang-valgrind-intltest (regex)	5m 8s
clang-valgrind-intltest (format)	16m 18s
clang-valgrind-intltest (translit)	6m 41s
clang-valgrind-intltest (rbbi)	7m 23s
clang-valgrind-intltest (rbnf)	6m 3s
clang-valgrind-intltest (rbnfrt)	6m 8s
clang-valgrind-intltest (icuserv)	5m 21s
clang-valgrind-intltest (idna)	5m 52s
clang-valgrind-intltest (convert)	6m 37s
clang-valgrind-intltest (rbnfp)	5m 3s
clang-valgrind-intltest (csdet)	5m 2s
clang-valgrind-intltest (spoof)	5m 15s
clang-valgrind-intltest (bidi)	4m 58s
	1h 53m 44s

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