[IMP] mail : improve emoji widget code to ease overrides

This commit attempts to improve emoji widget css and code to make it easily
overridable by other modules. This is done in preparation for extension by the
SmsWidget that will enable the emojis support.

To improve the emoji widget, the following changes have been made

  * remove the spacing after emoji fields by setting widget dropdown height to
    0 (emoji dropdown has relative position + (height > 0) which leaves an
    empty space after widget fields);
  * hide Emoji widget when field has "invisible modifier";
  * move the code that adds the emoji dropdown to another method, allowing to
    better understand code organization;

Task ID-2224393
PR #49096

0 files changed, 0 insertions, 0 deletions