[BUG] Accessibility: Disable Input labels and hint text fail WCAG 1.4.3

[LukeTaylor34]

Describe the bug
The Light grey Labels and hint text for Disabled inputs fail colour contrast WCAG 1.4.3.

Expected behaviour
The input label text needs to pass a contrast ratio of at least 4.5:1.

Screenshots

Additional context
1.4.3 - Contrast - The visual presentation of text and images of text has a contrast ratio of at least 4.5:1, except for the following:
Large Text - Large-scale text and images of large-scale text have a contrast ratio of at least 3:1;
Incidental - Text or images of text that are part of an inactive user interface component, that are pure decoration, that are not visible to anyone, or that are part of a picture that contains significant other visual content, have no contrast requirement.
Logotypes - Text that is part of a logo or brand name has no contrast requirement.

[LukeTaylor34]

After some further investigation this falls under - Incidental except - Text or images of text that are part of an inactive user interface component, that are pure decoration, that are not visible to anyone, or that are part of a picture that contains significant other visual content, have no contrast requirement.