core: Add note to find_host_component_handle docs #5992

Job	Run time
all-integration-tests	23m 10s
Build Spin Ubuntu	20m 16s
Build Spin (windows-latest)	28m 29s
Build Spin static (aarch64, aarch64-unknown-linux-musl)	15m 31s
Build Spin (macos-13)	12m 8s
Build Spin static (amd64, x86_64-unknown-linux-musl)	14m 40s
Review new dependencies for known vulnerabilities	3s
Build Spin (macos-14)	7m 34s
Run release build steps (ubuntu-20.04, amd64, --features openssl/vendored, target/release)	14m 28s
Run release build steps (ubuntu-20.04, aarch64, --features openssl/vendored --target aarch64-unkn...	15m 52s
Lint Rust	5m 51s
Run release build steps (macos-13, amd64, target/release)	19m 15s
Test Spin (ubuntu-22.04-4core-spin)	7m 56s
Run release build steps (macos-14, aarch64, target/release)	10m 46s
Test Spin (macos-14)	20m 41s
Run release build steps (windows-latest, amd64, .exe, target/release)	26m 29s
	4h 3m 9s

Provide feedback