Make it easier to click on items for bulk dismissal selection

What does this MR do?

On the security dashboard, clicking on the checkbox in the first column will show the selection summary component that lets you bulk dismiss vulnerabilities:

Previously, you had to click on the checkbox itself in order to select multiple vulnerabilities. This MR changes it so that for the first vulnerability, you still have to click on the checkbox, but subsequent vulnerabilities can be selected simply by clicking on the entire row. This makes selecting multiple vulnerabilities faster and easier:

Before	After

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• [-] Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• Style guides
• [-] Database guides
• Separation of EE specific content

Availability and Testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• Tested in all supported browsers
• [-] Informed Infrastructure department of a default or new setting change, if applicable per definition of done