feat: Update conversation basic filter (#11415)

# Pull Request Template

## Description

This PR updates the basic filter UI for conversations.

## Type of change

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

## How Has This Been Tested?

### Loom video

https://www.loom.com/share/df69a023a39c4dfca2c12b1ee42a0b2e?sid=977e802e-2865-46f1-ae8e-f89ab5eabc2a


## Checklist:

- [x] My code follows the style guidelines of this project
- [x] I have performed a self-review of my code
- [ ] 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
- [ ] 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

---------

Co-authored-by: Pranav <pranav@chatwoot.com>
Co-authored-by: Muhsin Keloth <muhsinkeramam@gmail.com>

app/javascript/dashboard/components-next/selectmenu/SelectMenu.vue

@@ -15,6 +15,13 @@ const props = defineProps({
     type: String,
     required: true,
   },
+  subMenuPosition: {
+    type: String,
+    default: 'right',
+    validator: value => {
+      return ['right', 'left', 'bottom'].includes(value);
+    },
+  },
 });
 
 const emit = defineEmits(['update:modelValue']);
@@ -44,14 +51,21 @@ const handleSelect = value => {
       trailing-icon
       color="slate"
       variant="faded"
-      class="!w-fit"
+      class="!w-fit max-w-40"
       :class="{ 'dark:!bg-n-alpha-2 !bg-n-slate-9/20': isOpen }"
       :label="labelValue"
       @click="toggleMenu"
     />
     <div
       v-if="isOpen"
-      class="absolute ltr:left-full rtl:right-full select-none max-w-48 ltr:ml-1 rtl:mr-1 flex flex-col gap-1 bg-n-alpha-3 backdrop-blur-[100px] p-1 top-0 shadow-lg rounded-lg border border-n-weak"
+      class="absolute select-none max-w-64 flex flex-col gap-1 bg-n-alpha-3 backdrop-blur-[100px] p-1 top-0 shadow-lg z-40 rounded-lg border border-n-weak dark:border-n-strong/50"
+      :class="{
+        'ltr:left-full rtl:right-full ltr:ml-1 rtl:mr-1':
+          subMenuPosition === 'right',
+        'ltr:right-full rtl:left-full ltr:mr-1 rtl:ml-1':
+          subMenuPosition === 'left',
+        'top-full mt-1 ltr:right-0 rtl:left-0': subMenuPosition === 'bottom',
+      }"
     >
       <Button
         v-for="option in options"