core: Fix stop() when executing attachMovie in DoInitAction #23115

Job	Run time
Paths filter	6s
Check dependencies	1m 35s
Test Rust stable / ubuntu-22.04	6m 9s
Lints with Rust stable	4m 30s
Test Rust ${{ matrix.rust_version }} / ${{ matrix.os }}	0s
Test Rust stable / windows-latest	9m 42s
Test Rust stable / macos-14	3m 34s
Test Rust nightly / ubuntu-22.04	5m 7s
Lints with Rust beta	4m 21s
Test Rust beta / ubuntu-22.04	4m 33s
Lints with Rust nightly	4m 24s
	44m 1s

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