[FIX] mail: broken AutoresizeInput style

hovering and focusing style is lost.

closes odoo/odoo#139911

Signed-off-by: Sébastien Theys (seb) <seb@odoo.com>

addons/mail/static/src/core/common/autoresize_input.scss

@@ -1,9 +1,11 @@
 .o-mail-AutoresizeInput:not([disabled]):focus {
-    border-color: map-get($theme-colors, "dark");
+    border-color: map-get($theme-colors, "dark") !important;
     background-color: $white;
 }
 
 .o-mail-AutoresizeInput:not([disabled]):hover {
     background-color: $white;
-    border: $border-width solid $border-color;
+    &:not(:focus) {
+        border: $border-width solid $border-color !important;
+    }
 }