refactor: cpi context

[ananas-block]

State

• do not merge we need to merge other changes first

Changes

Cpi context refactor

1. account order changed from:
   • from: executing instruction compressed accounts .. cpi context compressed accounts
   • to: cpi context accounts .. executing instruction accounts
   • note this is a breaking change
   • afaik nobody is using cpi context accounts yet so we will deactivate the feature with v2 deployment and activate it again with this deployment
2. Cpi context account state
   • replace NewAddressParamsPacked -> CpiContextNewAddressParamsAssignedPacked
   • to support address v2 derivation we store the owner in CpiContextNewAddressParamsAssignedPacked
   • readonly_addresses and readonly_accounts are placeholders
   • CpiContextInAccount and CpiContextOutAccount are structs without options for efficient zero copy
3. ReInitCpiContextAccount instruction
   • reinitializes existing cpi context accounts to the new data structure CpiContextAccount -> CpiContextAccount2
   • reinitialization changes the account discriminator from CpiContextAccount::DISCRIMINATOR -> CpiContextAccount2::DISCRIMINATOR
   • CpiContextAccount2::DISCRIMINATOR is anchor derived

system program small instruction accounts

• the feature gate which rendered passing of program account infos in cpis unnecessary has been dropped
• added system-program and account-compression program accounts to expected accounts

system program cpi signer check

1. replacesolana_pubkey::Pubkey::create_program_address with pinocchio_pubkey::derive_address

light-account-checks

1. add AccountIterator

[coderabbitai]

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