Improve swatch table overflow handling

[Cyanoxide]

Description (*)

Updates swatches.css to add overflow:auto to the three swatch tables (text, dropdown & visual) to allow for scrolling if the amount of inputs exceeds the available space and increase the min width of inputs (150px) within the table for better usability.

Intentionally left original input width (50px) as a fallback.

Fixed Issues (if relevant)

1. Fix Swatch Overflow issue #19932: Fix Swatch Overflow issue
2. [Backport] Fix swatch overflow issue #19933: [backport] Fix Swatch Overflow issue

Manual testing scenarios (*)

1. Add multiple store view and languages to your store (Our store has 19 but you should be able to reach replicate the issue with less)
2. Open an attribute page within the Admin area to configure (Stores > Product > Any attribute).
3. Table inputs at the bottom for languages should be too small to to use effectively
4. If 3. isn't true add more store views, the more that are added the smaller the input fields get.

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)
• All automated tests passed successfully (all builds on Travis CI are green)

[magento-cicd2]

All committers have signed the CLA.

[magento-engcom-team]

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[Cyanoxide]

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[rogyar]

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[magento-engcom-team]

Hi @rogyar, thank you for the review.
ENGCOM-4372 has been created to process this Pull Request

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