BBS+: add some checks on disclosed indexes array #1281

Job	Run time
🚨 C lint	18s
🚨 Lua lint	16s
🚨 REUSE Compliance	10s
🪟 Windows build test	1m 4s
🍎 Apple iOS build test	1m 9s
🐧 Linux build tests (musl and linux)	1m 2s
🥷 meson/ninja test (CCACHE=1)	1m 22s
🐹 go build & checks (1.23.1)	41s
🥷 meson/ninja test (CLANG=1 CCACHE=1)	1m 33s
🐹 go build & checks (1.22.7)	48s
🐯 js build & checks (20.x)	2m 19s
🐍 Python checks (ubuntu-latest, 3.12)	50s
🦀 rust build & checks (stable)	54s
🐍 Python checks (macos-latest, 3.12)	34s
🦀 rust build & checks (nightly)	55s
🤖 Semantic release	0s
🐧 Binary builds on Ubuntu	0s
🗃️ Check file changes	0s
🐯 js build release	0s
🍎 mac osx release build	0s
🐍 Python create source distribution	0s
📦 npm release	0s
📦 Pack release	0s
🐳 Publish Docker image	0s
🧻 Remove tag on fail	0s
📦 PyPI release	0s
	13m 55s

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