Fix audio samples not being able to be "finished" #34973

Job	Run time
📊 Static checks / Code style, file formatting, and docs	22s
🍏 iOS / Template (target=template_release)	2m 26s
🤖 Android / Editor (target=editor)	7m 11s
🤖 Android / Template arm32 (target=template_release, arch=arm32)	4m 16s
🌐 Web / Template w/ threads (target=template_release, threads=yes)	7m 59s
🤖 Android / Template arm64 (target=template_release, arch=arm64)	4m 43s
🌐 Web / Template w/o threads (target=template_release, threads=no)	8m 14s
🐧 Linux / Editor w/ Mono (target=editor)	9m 7s
🐧 Linux / Editor with doubles and GCC sanitizers (target=editor, tests=yes, dev_build=yes, scu_build=yes, precision=double, use_asan=yes, use_ubsan=yes, linker=gold)	40m 46s
🐧 Linux / Editor with clang sanitizers (target=editor, tests=yes, dev_build=yes, use_asan=yes, use_ubsan=yes, use_llvm=yes, linker=lld)	11m 32s
🍎 macOS / Editor (target=editor, tests=yes)	6m 58s
🐧 Linux / Editor with ThreadSanitizer (target=editor, tests=yes, dev_build=yes, use_tsan=yes, use_llvm=yes, linker=lld)	10m 19s
🏁 Windows / Editor (target=editor, tests=yes)	16m 9s
🍎 macOS / Template (target=template_release)	3m 51s
🐧 Linux / Template w/ Mono (target=template_release)	4m 13s
🏁 Windows / Template (target=template_release)	12m 45s
🐧 Linux / Minimal template (target=template_release, everything disabled)	3m 10s
🪲 Godot CPP / Build and test Godot CPP	8m 9s
	2h 42m 10s

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