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/ui/Switch.vue

@@ -38,20 +38,20 @@ export default {
   cursor: pointer;
   display: flex;
   flex-shrink: 0;
-  height: 19px;
+  height: 1.188rem;
   position: relative;
   transition-duration: 200ms;
   transition-property: background-color;
   transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
-  width: 34px;
+  width: 2.125rem;
 
   &.active {
     background-color: var(--w-500);
   }
 
   &.small {
-    width: 22px;
-    height: 14px;
+    width: 1.375rem;
+    height: 0.875rem;
 
     span {
       height: var(--space-one);