Map from Script ID to key metadata (for watch-only keys).
Declared in <wallet/scriptpubkeyman.h>
[[guarded_by(0x7ff371664ce8), guarded_by(0x7ff3654921b8), guarded_by(0x7ff35d1b1d98), guarded_by(0x7ff37e075c28), guarded_by(0x7ff379eac0e8), guarded_by(0x7ff37e0437b8)]]
std::map<CScriptID, CKeyMetadata> m_script_metadata;