Pass loader into TriggerAppBuilder #6652

Job	Run time
all-integration-tests	25m 3s
Build Spin static (aarch64, aarch64-unknown-linux-musl)	15m 47s
Build Spin Ubuntu	21m 21s
Build Spin static (amd64, x86_64-unknown-linux-musl)	15m 30s
Build Spin (windows-latest)	27m 47s
Review new dependencies for known vulnerabilities	4s
Build Spin (macos-13)	25m 0s
Run release build steps (ubuntu-20.04, amd64, --features openssl/vendored, target/release)	14m 28s
Build Spin (macos-14)	9m 41s
Lint Rust	9m 38s
Test Spin (ubuntu-22.04-4core-spin)	14m 32s
Run release build steps (ubuntu-20.04, aarch64, --features openssl/vendored --target aarch64-unkn...	15m 40s
Test Spin (macos-14)	22m 7s
Run release build steps (macos-13, amd64, target/release)	29m 12s
Run release build steps (macos-14, aarch64, target/release)	12m 45s
Run release build steps (windows-latest, amd64, .exe, target/release)	24m 46s
	4h 43m 21s

Provide feedback