Update medication_days_covered.sql with try_convert logic to handle varchar errors

Bug found when select * used. convert switched to try_convert and view updated

medication_days_covered/medication_days_covered.sql

@@ -18,7 +18,7 @@ with medication_strength as (
          *  IF:     Only characters in string, return '1'
          *  ELSE:   Subset the string to just the numeric part
          */
-        convert(NUMERIC(18, 4),
+        try_convert(NUMERIC(18, 4),
             case
                 when patindex('%[^0-9.,]%', value) = 0 then replace(value, ',', '')
                 when patindex('%[^0-9.,]%', value) = 1 then '1'
@@ -29,7 +29,7 @@ with medication_strength as (
          *  IF:     Only characters in string, return full string
          *  ELSE:   Subset the string to just the character part and clean
          */
-        convert(VARCHAR,
+        try_convert(VARCHAR,
             case
                 when patindex('%[^0-9.,-]%', value) = 1 then value
                 when charindex(' ', ltrim(substring(value, patindex('%[^0-9.,-]%', value), len(value)))) > 0