[Issue] Correct colspan in visual swatch admin

[m2-assistant]

This issue is automatically created based on existing pull request: #39359: Correct colspan in visual swatch admin

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Description (*)

The colspan is incorrect. Probably based on the text.phtml file, but there is only 1 th per store + 4 additional, as you can see in the code.

Manual testing scenarios (*)

Edit a visual swatch and look at the tfoot of the swatches table. The number does not match the number of columns if the number of storeviews is > 1 . For 1 storeview, the number still matches (1 * 2 + 3 = 5 and 1 + 4 = 5), but otherwise it will be too high.

(As far as I can tell, this doesn't have any effect because the number of stores is at least 1 so the colspan will always be high

Questions or comments

Contribution checklist (*)

• Pull request has a meaningful description of its purpose
• All commits are accompanied by meaningful commit messages
• All new or changed code is covered with unit/integration tests (if applicable)
• README.md files for modified modules are updated and included in the pull request if any README.md predefined sections require an update
• All automated tests passed successfully (all builds are green)