chore: Increase custom filter limit from 50 to 1000 per user (#12603)

# Pull Request Template

## Description

This PR increases the custom filter limit from 50 to 1000 per user

## Type of change

- [x] Bug fix (non-breaking change which fixes an issue)

## How Has This Been Tested?

### Screenshot

<img width="1264" height="71" alt="image"
src="https://github.com/user-attachments/assets/e12667bb-147c-4115-b8a8-9113fca471db"
/>



## 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
- [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/models/custom_filter.rb

@@ -17,7 +17,6 @@
 #  index_custom_filters_on_user_id     (user_id)
 #
 class CustomFilter < ApplicationRecord
-  MAX_FILTER_PER_USER = 50
   belongs_to :user
   belongs_to :account
 
@@ -25,7 +24,7 @@ class CustomFilter < ApplicationRecord
   validate :validate_number_of_filters
 
   def validate_number_of_filters
-    return true if account.custom_filters.where(user_id: user_id).size < MAX_FILTER_PER_USER
+    return true if account.custom_filters.where(user_id: user_id).size < Limits::MAX_CUSTOM_FILTERS_PER_USER
 
     errors.add :account_id, I18n.t('errors.custom_filters.number_of_records')
   end