Implement LanguageModelDictContent.getWordProbability().

...ary/structure/backward/v402/ver4_patricia_trie_policy.cpp

...nary/structure/v4/content/language_model_dict_content.cpp

...ionary/structure/v4/content/language_model_dict_content.h

...mpl/dictionary/structure/v4/ver4_patricia_trie_policy.cpp

...gest/policyimpl/dictionary/utils/forgetting_curve_utils.h

native/jni/src/utils/int_array_view.h

...structure/v4/content/language_model_dict_content_test.cpp

native/jni/tests/utils/int_array_view_test.cpp