QmlFormat Semicolon is missing at the end of some default exports

After formatting of the following statements (most likely the whole class of statements where BinaryExpression of FunctionExpression or something(undiscovered yet) is taking place)

1) export default 1 + 1 //BinaryExpression
2) export default(x,y) => x + 2 //FunctionExpression

semicolon is missing. Maybe it's not needed, however "js prettier" adds it.

This task can be treated as an acknowledgement and documentation of this fact.

If the fix is needed, the starting debugging / implementation points could be

https://codereview.qt-project.org/c/qt/qtdeclarative/+/538083/15/tests/auto/qmldom/reformatter/tst_reformatter.h#564

bool ScriptFormatter::visit(FunctionExpression *ast) {
....
    if (ast->body) { <one line body> }
}