scripted-diff: Following the C++ Standard rules for identifiers with _.

Any identifier starting with two _, or one _ followed by a capital letter is reserved for the compiler and thus must not be used. See: https://stackoverflow.com/a/228797/7130273

-BEGIN VERIFY SCRIPT-
s() { git grep -l "$1" src | xargs sed -i "s/$1/$2/g"; }

s '__pushKV' 'pushKVEnd'
s '_EraseTx' 'EraseTxNoLock'
s '_Other' 'Other'
-END VERIFY SCRIPT-

src/common/settings.cpp

@@ -115,7 +115,7 @@ bool WriteSettings(const fs::path& path,
 {
     SettingsValue out(SettingsValue::VOBJ);
     for (const auto& value : values) {
-        out.__pushKV(value.first, value.second);
+        out.pushKVEnd(value.first, value.second);
     }
     std::ofstream file;
     file.open(path);