Use is_disk_index_enabled() #14827

Job	Run time
check	4m 7s
test (token/cli, token/program, token/program-2022, associated-token-account/program, instruction...	20m 2s
test (single-pool/cli, single-pool/program)	19m 38s
cargo-test-sbf (token/program)	8m 40s
cargo-test-sbf (instruction-padding/program, token/program-2022, token/program-2022-test)	14m 2s
test (token-upgrade/cli, token-upgrade/program)	18m 25s
cargo-test-sbf (associated-token-account/program, associated-token-account/program-test)	10m 2s
cargo-test-sbf (token-upgrade/program)	7m 41s
cargo-test-sbf (feature-proposal/program)	9m 2s
cargo-test-sbf (governance/addin-mock/program, governance/program)	11m 53s
cargo-test-sbf (name-service/program)	8m 42s
cargo-test-sbf (stake-pool/program)	10m 11s
cargo-test-sbf (single-pool/program)	8m 21s
	2h 30m 46s

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