Refactor - `LoadedProgramType::Loaded` and `LoadedProgramOwner` #2684

Job	Run time
cargo-test-sbf (token/program)	7m 27s
cargo-test-sbf (instruction-padding/program, token/program-2022, token/program-2022-test)	14m 25s
cargo-test-sbf (associated-token-account/program, associated-token-account/program-test)	8m 40s
check	0s
cargo-test-sbf (token-upgrade/program)	9m 30s
cargo-test-sbf (feature-proposal/program)	7m 26s
test	0s
cargo-test-sbf (governance/addin-mock/program, governance/program)	11m 1s
cargo-test-sbf (memo/program)	9m 33s
cargo-test-sbf (name-service/program)	9m 25s
cargo-test-sbf (stake-pool/program)	12m 50s
cargo-test-sbf (single-pool/program)	9m 42s
	1h 39m 59s

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