Description:
When inserting a new row in a table, Writer copies the row's formattings both at the level of paragraphs and characters, even though we should avoid to copy the direct character formattings.




Steps to Reproduce:
1. Create an empty Writer Document
2. Create a table
3. Write "TEXTREDTEXT" in the last cell
4. Select the portion "RED" from the text, and apply a specific Font color on it 
5. Place the cursor in the last cell, and insert a new row after it (simply press TAB to do this) 
6. Write something into the new last cell of the table

Actual Results:
The newly typed text will be the same color, what you set in as a direct character formatting.

Expected Results:
The newly typed text should be black (default).


Reproducible: Always


User Profile Reset: No



Additional Info:
This bug is a regression of https://bugs.documentfoundation.org/show_bug.cgi?id=143244 

The reason why this regression happened is that: MSO Word uses a paragraph mark symbol (i.e the control character than can be configured to be shown), which is imported in Writer as a 0-length hint. To fasten up the import of DOCX tables, the core applies the formattings from this 0-length attribute on paragraph level, directly before inserting a new row. 
All in all, to solve this bug, we need to make sure, that we only copy the formattings, if it is a 0-length hint.