chore: (old UI) Replace old Twitter icon with new 'X' (#9641)

"This update involves replacing the old Twitter icon with the new 'X' icon from Font Awesome."

Co-authored-by: bishalghimire1 <80529795+bishalghimire1@users.noreply.github.com>

apps/block_scout_web/assets/static/images/icons/fontawesome/twitter.svg

@@ -1 +1,4 @@
-<svg height="1792" viewBox="0 0 1792 1792" width="1792" xmlns="http://www.w3.org/2000/svg"><path d="m1684 408q-67 98-162 167 1 14 1 42 0 130-38 259.5t-115.5 248.5-184.5 210.5-258 146-323 54.5q-271 0-496-145 35 4 78 4 225 0 401-138-105-2-188-64.5t-114-159.5q33 5 61 5 43 0 85-11-112-23-185.5-111.5t-73.5-205.5v-4q68 38 146 41-66-44-105-115t-39-154q0-88 44-163 121 149 294.5 238.5t371.5 99.5q-8-38-8-74 0-134 94.5-228.5t228.5-94.5q140 0 236 102 109-21 205-78-37 115-142 178 93-10 186-50z" fill="#fff"/></svg>
+<svg enable-background="new 0 0 512 512" height="1792" viewBox="0 0 1226.37 1226.37" width="1792" xmlns="http://www.w3.org/2000/svg">
+  <path d="m727.348 519.284 446.727-519.284h-105.86l-387.893 450.887-309.809-450.887h-357.328l468.492 681.821-468.492 544.549h105.866l409.625-476.152 327.181 476.152h357.328l-485.863-707.086zm-144.998 168.544-47.468-67.894-377.686-540.24h162.604l304.797 435.991 47.468 67.894 396.2 566.721h-162.604l-323.311-462.446z" fill="#fff"/>
+  <!-- Créé par Thomas Cabrit, Kcalb Ltd , https://github.com/Thomaskcalb, https://github.com/Official-Kcalb-ltd, https://kcalb.org -->
+</svg>