QmlJS: Fix auto-indent after an opening brace placed on a new line

Left brace wasn't handled in the expression_maybe_continuation state
of qml/js code formatter. It led to expression_or_objectdefinition
could not be continued on a new line.

Task-number: QTCREATORBUG-12326
Change-Id: Id8fcaa586000008fce72c7c0c03ed1739b1c7aa1
Reviewed-by: Marco Benelli <marco.benelli@qt.io>

src/libs/qmljs/qmljscodeformatter.cpp

@@ -300,7 +300,8 @@ void CodeFormatter::recalculateStateAfter(const QTextBlock &block)
             case Question:
             case Delimiter:
             case LeftBracket:
-            case LeftParenthesis:  leave(); continue;
+            case LeftParenthesis:
+            case LeftBrace:         leave(); continue;
             default:                leave(true); continue;
             } break;