[BUG] Border style of the first cell adjacent to cells with rowspan

[benny-yoo]

Issue Category

• [ ] Enhancement
• [x] Bug
• [ ] Question
• [ ] Documentation gap/issue

Product Versions

• Please specify what version of the library you are using......: [ 3.11 ]
• Please specify what version(s) of PowerPoint you are targeting: [ 2021 ]
• Please specify what web browser you are using.................: [ chrome ]

Desired Behavior

The border style should also be applied to cells adjacent to cells with rowspan.

Observed Behavior

The border style of the first row of cells with rowspan is not applied

Steps to Reproduce

Run demo/browser Rowspan Demo with next table element, which is applied border style

<table id="tabRowspan" class="tabHtmlToPpt w-100">
<thead class="table-light">
	<tr>
		<th class="tg-header">Last Name</th>
		<th class="tg-header">First Name</th>
		<th class="tg-header">Count</th>
	</tr>
</thead>
<tbody>
	<tr>
		<td rowspan="3">Smith</td>
		<td style="border-left: solid 5px #000;">Liz</td>
		<td>50</td>
	</tr>
	<tr>
		<td style="border-left: solid 5px #000;">Eve</td>
		<td>94</td>
	</tr>
	<tr>
		<td style="border-left: solid 5px #000;">Scott</td>
		<td>101</td>
	</tr>
</tbody>
</table>