#156 Disable query polling

[nevendyulgerov]

Summary

I removed the pollInterval setting for all graphql queries so that we are doing any http requests to the graphql BE only on page load. This can be easily noticed on the /blocks page, where we were previously polling a lot of data every 30 seconds.

I also checked the useBlockNumber custom hook that we have in /staking/src/services/eth.tsx. It is used on most of the pages and although it often causes re-renders in components that use it (because the block number changes every ~15 seconds), I didn't notice it causing any side effects like extra http requests happening. That's why I didn't make any changes in useBlockNumber.

Testing Instructions

1. Build the app locally for dev env
2. Go to the / (home), or /blocks , or any other page where we were previously polling the graphql queries
3. Observe the network requests
4. Notice that no extra network requests for the page data are being made to the graphql BE after the page load

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Name	Status	Preview	Comments	Updated (UTC)
staking	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jul 28, 2024 10:59am

[coveralls]

Pull Request Test Coverage Report for Build 10131129284

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 77.511%

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Totals
Change from base Build 10001733387:	0.0%
Covered Lines:	338
Relevant Lines:	401

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💛 - Coveralls