v2.0: Improves panic message if send() fails in streaming_unpack_snapshot() (backport of #2459) #8597

Job	Run time
cargo-test-sbf (token/program)	8m 30s
check	3m 18s
cargo-test-sbf (instruction-padding/program, token/program-2022, token/program-2022-test)	15m 59s
test (token/cli, token/program, token/program-2022, associated-token-account/program, instruction...	21m 16s
cargo-test-sbf (associated-token-account/program, associated-token-account/program-test)	11m 7s
test (single-pool/cli, single-pool/program)	19m 55s
cargo-test-sbf (token-upgrade/program)	9m 0s
test (token-upgrade/cli, token-upgrade/program)	19m 4s
cargo-test-sbf (feature-proposal/program)	11m 52s
cargo-test-sbf (governance/addin-mock/program, governance/program)	14m 18s
cargo-test-sbf (memo/program)	9m 14s
cargo-test-sbf (name-service/program)	11m 6s
cargo-test-sbf (stake-pool/program)	13m 34s
cargo-test-sbf (single-pool/program)	9m 36s
	2h 57m 49s

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