991689-How to apply border styles for merged cells#1889

SivakumarRamya wants to merge 4 commits intohotfix/hotfix-v31.2.12syncfusion-content/document-processing-docs:hotfix/hotfix-v31.2.12from

991689-Merged-Cellstylesyncfusion-content/document-processing-docs:991689-Merged-CellstyleCopy head branch name to clipboard