Update dragexit data to match ondragexit data

This change updates the incomplete version info we had in the support data
for the dragexit event; the change just copies over the more-complete
version info from the support data for the ondragexit event handler.

Relates to mdn#6826

Author: sideshowbarker

api/Document.json

@@ -3354,25 +3354,26 @@
               "version_added": false
             },
             "edge": {
-              "version_added": false
+              "version_added": "12",
+              "version_removed": "79"
             },
             "firefox": {
-              "version_added": false
+              "version_added": "3.5"
             },
             "firefox_android": {
               "version_added": false
             },
             "ie": {
-              "version_added": false
+              "version_added": "10"
             },
             "opera": {
-              "version_added": false
+              "version_added": "12"
             },
             "opera_android": {
               "version_added": false
             },
             "safari": {
-              "version_added": false
+              "version_added": "3.1"
             },
             "safari_ios": {
               "version_added": false