et: fi: move stressopt from tr_languages.c to language files

This is to make sure "stressopt" language option works. Current tests
would fail if it didn't.

espeak-ng-data/lang/urj/et

 name Estonian
 language et
+
+stressOpt 1 2 4 6 // (S_NO_DIM + S_FINAL_DIM = S_FINAL_DIM_ONLY), S_FINAL_NO_2, S_2_TO_HEAVY

espeak-ng-data/lang/urj/fi

 name Finnish
 language fi
+
+stressOpt 1 2 4 6 // (S_NO_DIM + S_FINAL_DIM = S_FINAL_DIM_ONLY), S_FINAL_NO_2, S_2_TO_HEAVY

src/libespeak-ng/tr_languages.c

 		SetupTranslator(tr, stress_lengths_fi, stress_amps_fi);
 
 		tr->langopts.stress_rule = STRESSPOSN_1L;
-		tr->langopts.stress_flags = S_FINAL_DIM_ONLY | S_FINAL_NO_2 | S_2_TO_HEAVY; // move secondary stress from light to a following heavy syllable
 		tr->langopts.param[LOPT_IT_DOUBLING] = 1;
 		tr->langopts.long_stop = 130;