Pass loader into TriggerAppBuilder #6651

Job	Run time
all-integration-tests	3m 10s
Build Spin static (aarch64, aarch64-unknown-linux-musl)	3m 14s
Build Spin Ubuntu	3m 16s
Build Spin static (amd64, x86_64-unknown-linux-musl)	3m 15s
Build Spin (windows-latest)	2m 57s
Review new dependencies for known vulnerabilities	2s
Build Spin (macos-13)	3m 15s
Build Spin (macos-14)	3m 17s
Lint Rust	3m 14s
Run release build steps (ubuntu-20.04, amd64, --features openssl/vendored, target/release)	3m 15s
Test Spin (ubuntu-22.04-4core-spin)	1m 54s
Run release build steps (ubuntu-20.04, aarch64, --features openssl/vendored --target aarch64-unkn...	3m 13s
Test Spin (macos-14)	1s
Run release build steps (macos-13, amd64, target/release)	3m 16s
Run release build steps (macos-14, aarch64, target/release)	3m 20s
Run release build steps (windows-latest, amd64, .exe, target/release)	3m 6s
	43m 45s

Provide feedback