Improve stability of contract extender API

[ingria]

This API is used for getting info about contracts, such as:

• jetton and nft metadata on respective pages
• nft enumeration on collection page
• contract source info on address page
• contract info on address page
• resolving domains

[giveemhell29]

I actually lost my $50 usdt and k believe you have it I can try and find a better place to jt it so it won’t get sent to you again