Feat/filter evm rpc endpoints 1288

[Torresmorah]

Improve UX in endpoints pages

What does this PR do?

• Resolve Improve UX in endpoints and EVM RPC endpoints pages #1288
• Filter evm rpc endpoints by default and fix the sorting
• Remove button to show endpoints list, replace it with the copy button to avoid an extra step to get the list
• Use a separate query to get the producer count instead of querying the same data with query and subscription
• Use the same query to get the list of endpoints

Steps to test

1. Run the project locally
2. Go to endpoints page
3. Write down a search criteria
4. Check the results and click in Copy button
5. Validate the text on the clipboard
6. Go to evm endpoints page
7. Check the filter

Screenshots

[xavier506]

LGTM