Add packet flag for from staked sender (v1.18) (#649) #6

Job	Run time
cargo-test-sbf (token/program)	17m 57s
test	0s
check	0s
cargo-test-sbf (instruction-padding/program, token/program-2022, token/program-2022-test)	24m 52s
cargo-test-sbf (associated-token-account/program, associated-token-account/program-test)	19m 27s
cargo-test-sbf (token-upgrade/program)	17m 55s
cargo-test-sbf (feature-proposal/program)	17m 30s
cargo-test-sbf (governance/addin-mock/program, governance/program)	24m 33s
cargo-test-sbf (memo/program)	17m 51s
cargo-test-sbf (name-service/program)	18m 49s
cargo-test-sbf (stake-pool/program)	24m 49s
cargo-test-sbf (single-pool/program)	18m 56s
	3h 22m 39s

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