tdf#114398 ods export: output <text:line-break/> when CELLTYPE_EDIT

assume regression since LO 4.2
based on LO 7.5 a7589f621fcbe6305335730d2dd86b9230a18594
for tdf#103829.

Change-Id: I12726697565722e132941875fb32cad95c8f9768
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/168270
Tested-by: Jenkins
Reviewed-by: Justin Luth <jluth@mail.com>
diff --git a/sc/source/filter/xml/xmlexprt.cxx b/sc/source/filter/xml/xmlexprt.cxx
index 1f56ece..00231fc 100644
--- a/sc/source/filter/xml/xmlexprt.cxx
+++ b/sc/source/filter/xml/xmlexprt.cxx
@@ -3145,6 +3145,11 @@ void flushParagraph(
                    SvXMLElementExport Tab(rExport, XML_NAMESPACE_TEXT, XML_TAB, false, false);
                    break;
                }
                else if (p->Which() == EE_FEATURE_LINEBR)
                {
                    SvXMLElementExport L(rExport, XML_NAMESPACE_TEXT, XML_LINE_BREAK, false, false);
                    break;
                }
            }
        }
        else