feat: Add RTL Support to Widget (#11022)

This PR adds RTL support to the web widget for improved right-to-left language compatibility, updates colors, and cleans up code.

Fixes https://linear.app/chatwoot/issue/CW-4089/rtl-issues-on-widget

https://github.com/chatwoot/chatwoot/issues/9791

Other PR: https://github.com/chatwoot/chatwoot/pull/11016

app/javascript/dashboard/assets/scss/_helper-classes.scss

@@ -4,7 +4,6 @@
   @apply inline-block h-6 py-0 px-6 relative align-middle w-6;
 
   &.message {
-    @include normal-shadow;
     @apply bg-white dark:bg-slate-800 rounded-full left-0 my-3 mx-auto p-4 top-0;
 
     &::before {