tdf#123774 OOXML chart export: keep digits of percentages of data points

by exporting PercentageNumberFormat, checking the "Label" format
directly and taking the respective number format based on that.

Note: also fix the "LinkNumberFormatToSource" property. If we create a
pie chart with data labels and set the "Show value as number" or
"Show value as percentage" and check on/off "Source format", this move
is not set the property in the XPropertySet.

Because of this, it fixes also the export of correct value of
"link-data-style-to-source" property into ODS files.
But this patch doesn't fix the export of old ODS files to OOXML,
because they contain wrong (always true) "link-data-style-to-source"
value.

Change-Id: I4098a245dec5bf35cde20c9ccb79aca726230118
Reviewed-on: https://gerrit.libreoffice.org/82703
Reviewed-by: László Németh <nemeth@numbertext.org>
Tested-by: László Németh <nemeth@numbertext.org>

0 files changed, 0 insertions, 0 deletions