flamenco: fix improper usages of instr borrowed account view #10469

Job	Run time
firedancer / firedancer-localnet	4m 25s
ledgers / ledger-replay	7m 4s
tests / test (linux_gcc_noarch64)	1m 8s
tests / test (linux_gcc_x86_64)	8m 20s
tests / test (linux_gcc_icelake)	5m 16s
tests / test (linux_clang_x86_64)	7m 19s
tests / test (linux_clang_icelake)	6m 34s
tests / test (native)	6m 0s
tests / test (native-no-agave)	3m 18s
ledgers / ledger-coverage	0s
	49m 24s

Provide feedback