Bug - Multiple File Upload - `progressVariant` is limited to "success|warning|danger" bar colors and the BLUE color is not possible

Describe the problem
The component https://v5-archive.patternfly.org/components/file-upload/multiple-file-upload does not allow to have BLUE bar colors as mentioned in the Design Guidelines https://v5-archive.patternfly.org/components/file-upload/multiple-file-upload/design-guidelines/

The guidelines indicate that the BLUE color can be used for "In Progress" statuses. However, the current progressVariant does not allow you to set a value so the progress bar becomes BLUE

How do you reproduce the problem?
Provide steps to reproduce. A codesandbox demonstrating the problem is appreciated.

Expected behavior

• progressVariant should allow a value for BLUE or
• If progressVariant=null|undefined then BLUE should be applied automatically

Is this issue blocking you?
List the workaround if there is one.

Screenshots
If applicable, add screenshots to help explain the issue.

What is your environment?

• OS: Fedora 41
• Browser Chrome

What is your product and what release date are you targeting?

Any other information?

从 Multiple File Upload 组件开始，追踪其 progressVariant prop 如何控制进度条颜色。将组件行为与链接的设计指南进行比较，并确认是否适合添加 blue 值，或为 null 或 undefined 设置默认值。完成的标准是进行中的上传显示为蓝色，同时现有的 success、warning 和 danger 变体继续正常工作。