Empty lines inside table cell cause empty WW result

[Ivan Bedarev]

Here is br tag causes stack.pop

tui.editor/apps/editor/src/convertors/toWysiwyg/htmlToWwConvertors.ts

Line 186 in 0c5c11b

 if (prev && (isInlineNode(prev) || isCustomHTMLInlineNode(state, prev))) { 

After convert cycle stack will be empty and converter will return null as result

Md example

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