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/shared/components/specs/__snapshots__/DateSeparator.spec.js.snap

@@ -2,18 +2,8 @@
 
 exports[`DateSeparator > date separator snapshot 1`] = `
 <div
-  class="date--separator text-slate-700"
-  data-v-b24b73fa=""
+  class="text-sm text-n-slate-11 h-[50px] leading-[50px] relative text-center w-full before:content-[''] before:h-px before:absolute before:top-6 before:w-[calc((100%-120px)/2)] before:bg-n-slate-4 before:dark:bg-n-slate-6 before:left-0 after:content-[''] after:h-px after:absolute after:top-6 after:w-[calc((100%-120px)/2)] after:bg-n-slate-4 after:dark:bg-n-slate-6 after:right-0"
 >
   Nov 18, 2019
 </div>
 `;
-
-exports[`dateSeparator > date separator snapshot 1`] = `
-<div
-  class="date--separator text-slate-700"
-  data-v-b24b73fa=""
->
-   Nov 18, 2019 
-</div>
-`;