feat: Support bigger font size in dashboard (#10974)

# Pull Request Template

## Description

Fixes
https://linear.app/chatwoot/issue/CW-4091/accessibility-improvement-support-bigger-font-size-for-the-dashboard

## Type of change

- [x] New feature (non-breaking change which adds functionality)

## How Has This Been Tested?

### **Loom video**

https://www.loom.com/share/1ab781859fa748a5ad54aacbacd127b4?sid=a7dd9164-a6de-462f-bff7-1b25e9c55b4f

## Checklist:

- [x] My code follows the style guidelines of this project
- [x] I have performed a self-review of my code
- [x] I have commented on my code, particularly in hard-to-understand
areas
- [ ] I have made corresponding changes to the documentation
- [x] My changes generate no new warnings
- [x] I have added tests that prove my fix is effective or that my
feature works
- [x] New and existing unit tests pass locally with my changes
- [ ] Any dependent changes have been merged and published in downstream
modules

app/javascript/dashboard/components-next/Campaigns/Pages/CampaignPage/LiveChatCampaign/LiveChatCampaignDialog.vue

@@ -40,7 +40,7 @@ const handleSubmit = campaignDetails => {
 
 <template>
   <div
-    class="w-[400px] z-50 min-w-0 absolute top-10 ltr:right-0 rtl:left-0 bg-n-alpha-3 backdrop-blur-[100px] p-6 rounded-xl border border-slate-50 dark:border-slate-900 shadow-md flex flex-col gap-6 max-h-[85vh] overflow-y-auto"
+    class="w-[25rem] z-50 min-w-0 absolute top-10 ltr:right-0 rtl:left-0 bg-n-alpha-3 backdrop-blur-[100px] p-6 rounded-xl border border-slate-50 dark:border-slate-900 shadow-md flex flex-col gap-6 max-h-[85vh] overflow-y-auto"
   >
     <h3 class="text-base font-medium text-slate-900 dark:text-slate-50">
       {{ t(`CAMPAIGN.LIVE_CHAT.CREATE.TITLE`) }}

app/javascript/dashboard/components-next/Campaigns/Pages/CampaignPage/SMSCampaign/SMSCampaignDialog.vue

@@ -39,7 +39,7 @@ const handleClose = () => emit('close');
 
 <template>
   <div
-    class="w-[400px] z-50 min-w-0 absolute top-10 ltr:right-0 rtl:left-0 bg-n-alpha-3 backdrop-blur-[100px] p-6 rounded-xl border border-slate-50 dark:border-slate-900 shadow-md flex flex-col gap-6"
+    class="w-[25rem] z-50 min-w-0 absolute top-10 ltr:right-0 rtl:left-0 bg-n-alpha-3 backdrop-blur-[100px] p-6 rounded-xl border border-slate-50 dark:border-slate-900 shadow-md flex flex-col gap-6"
   >
     <h3 class="text-base font-medium text-slate-900 dark:text-slate-50">
       {{ t(`CAMPAIGN.SMS.CREATE.TITLE`) }}