XWIKI-17793: Users cannot continue typing seamlessly after inserting a mention...

XWIKI-17793: Users cannot continue typing seamlessly after inserting a mention with the '@' shortcut
XWIKI-19236: Mentions are not inline where inserted in an empty line
* Enforce the inline mode when inserting the mention macro using the @ shortcut. This also moves the caret after the macro.

xwiki-platform-core/xwiki-platform-mentions/xwiki-platform-mentions-ui/src/main/resources/XWiki/Mentions/MentionsMacro.xml

@@ -209,7 +209,7 @@
           editor.once('afterInsertHtml', function () {
             editor.execCommand('xwiki-macro-insert', {
               name: 'mention',
-              inline: true,
+              inline: 'enforce',
               parameters: {
                 reference: param.id,
                 style: 'FULL_NAME',