flamenco: fix improper usages of instr borrowed account view #10462

Job	Run time
ledgers / ledger-replay	7m 21s
firedancer / firedancer-localnet	2m 41s
tests / test (linux_gcc_noarch64)	50s
tests / test (linux_gcc_x86_64)	8m 18s
tests / test (linux_gcc_icelake)	5m 11s
tests / test (linux_clang_x86_64)	7m 5s
tests / test (linux_clang_icelake)	6m 56s
tests / test (native)	6m 3s
tests / test (native-no-agave)	3m 16s
ledgers / ledger-coverage	0s
	47m 41s

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