feat(dropdown): new default exact for fulltextsearch

As proposed in #1745 (comment) this PR changes the default value for fullTextSearch to exact as it already is for the search component.

As this is a breaking change it is supposed to be part of 2.9

Author: lubber-de

src/definitions/modules/dropdown.js

@@ -3986,7 +3986,7 @@ $.fn.dropdown.settings = {
   keepOnScreen           : true,       // Whether dropdown should check whether it is on screen before showing
 
   match                  : 'both',     // what to match against with search selection (both, text, or label)
-  fullTextSearch         : false,      // search anywhere in value (set to 'exact' to require exact matches)
+  fullTextSearch         : 'exact',    // search anywhere in value (set to 'exact' to require exact matches)
   ignoreDiacritics       : false,      // match results also if they contain diacritics of the same base character (for example searching for "a" will also match "á" or "â" or "à", etc...)
   hideDividers           : false,      // Whether to hide any divider elements (specified in selector.divider) that are sibling to any items when searched (set to true will hide all dividers, set to 'empty' will hide them when they are not followed by a visible item)