Simplify default database resolution in sqlite #6666

Job	Run time
Lint Rust	8m 32s
Build Spin static (aarch64, aarch64-unknown-linux-musl)	6m 32s
Build Spin Ubuntu	20m 59s
Build Spin static (amd64, x86_64-unknown-linux-musl)	13m 52s
all-integration-tests	23m 23s
Build Spin (windows-latest)	46m 30s
Review new dependencies for known vulnerabilities	5s
Build Spin (macos-13)	35m 26s
Run release build steps (ubuntu-20.04, amd64, --features openssl/vendored, target/release)	17m 11s
Build Spin (macos-14)	20m 41s
Test Spin (ubuntu-22.04-4core-spin)	14m 45s
Run release build steps (ubuntu-20.04, aarch64, --features openssl/vendored --target aarch64-unkn...	15m 10s
Test Spin (macos-14)	30m 14s
Run release build steps (macos-13, amd64, target/release)	22m 49s
Run release build steps (macos-14, aarch64, target/release)	12m 29s
Run release build steps (windows-latest, amd64, .exe, target/release)	25m 8s
	5h 13m 46s

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