Fix autocompletion lookahead handling

Bug: 8689370
Change-Id: I056b1788764bd5c4d8ad9da86e790562d2781f06

native/jni/src/suggest/core/policy/weighting.cpp

@@ -229,7 +229,7 @@ static inline void profile(const CorrectionType correctionType, DicNode *const n
         case CT_MATCH:
             return 1;
         case CT_COMPLETION:
-            return 0;
+            return 1;
         case CT_TERMINAL:
             return 0;
         case CT_NEW_WORD_SPACE_SUBSTITUTION:

native/jni/src/suggest/policyimpl/typing/scoring_params.cpp

@@ -41,8 +41,8 @@ const float ScoringParams::SUBSTITUTION_COST = 0.363f;
 const float ScoringParams::COST_NEW_WORD = 0.024f;
 const float ScoringParams::COST_NEW_WORD_CAPITALIZED = 0.174f;
 const float ScoringParams::DISTANCE_WEIGHT_LANGUAGE = 1.123f;
-const float ScoringParams::COST_FIRST_LOOKAHEAD = 0.462f;
-const float ScoringParams::COST_LOOKAHEAD = 0.092f;
+const float ScoringParams::COST_FIRST_LOOKAHEAD = 0.545f;
+const float ScoringParams::COST_LOOKAHEAD = 0.073f;
 const float ScoringParams::HAS_PROXIMITY_TERMINAL_COST = 0.126f;
 const float ScoringParams::HAS_EDIT_CORRECTION_TERMINAL_COST = 0.056f;
 const float ScoringParams::HAS_MULTI_WORD_TERMINAL_COST = 0.536f;