- Integrate themes CSS files into index.css
- Corrects the chevron icon size being shown for each size in storybook
- Uses new S2 tokens for field width and corner rounding

Expands the Chromatic-only template in Storybook to increase coverage
of different options.

Organizes the stories into sections using the formatting and typography
previously established with Action button. States in each section are
based on the grid of options in the Desktop S2 design Figma, with some
additions such as the loading state. And the Switch examples from the
existing template.

Removes the "Open" story which is now covered in the Chromatic template.

Improves display of Popover within these different contexts; fixes how
it is aligned on the side label example. Changes the side label example
to use flex row instead of using inline-block which could wrap as the
screen shrunk.

Adds aria-labelledby and unique ids to make sure the label is associated
with the Picker.

Adds missing icon (to left of value/placeholder text) option to
Storybook, along with VRT coverage.

Fixes several problems with colors not matching the spec, caused by a
few specificity issues.

Some disabled states were showing changing colors on hover. Resolved
with some added specificity to a disabled selector and excluding
disabled from the is-open styles.

Add new down state using "calculated perspective" method, and existing
custom properties that define the width and height.

Clear up linter warnings. Removes an unused custom property.

Since the commons version on main was updated to 10.0, the Picker
started building with the wrong version of commons when importing
basebutton.css and listing mods that have been removed in the version
of commons in the spectrum-two branch.

Fixes the loading state in high contrast not showing the disabled
chevron color on hover, and disables the down state on disabled and
loading. Some added specificity was necessary.

The spacing between alert icon and disclosure icon was incorrect
because it was being overridden by a selector that shouldn't have been
affecting this scenario (which was using the subsequent-sibling
combinator ~). Some mods around the spacing for the three different
types of icons were also not working as expected.

Fixes this spacing and clarifies which spacing is which. Renames the mod
that applies to the optional workflow icon to the left of the value.

Simplifies quiet styles by changing custom property values instead of
adding extra styles.

Adds example with overflow behavior in Chromatic only template, so this
is captured in VRTs. Also adds Sizing + quiet section, and passes
through isDisabled to the Help text.

Adds the CJK line-height token defined on the design specs.

The top to alert icon in Spectrum 2 now uses the
component-top-to-workflow-icon-* tokens as defined on the design.

Adjusts Picker Storybook markup for the example of using HelpText
alongside the Picker.
- Makes sure HelpText appears below the Picker when using side label
- HelpText now gets set to the same t-shirt size as the Picker

Adds conditional controls to disabled and loading states, per the
PR feedback that disabled + loading should not be possible as a
combination.

Include downstate dimension capture in Storybook.

Removes fallback experiment from downstate tokens in the CSS, as they do
not work when the inline-size or block-size token or mod gets set to
auto or 100%.

Per design feedback, the popover should not be showing when the picker
is in the loading state. This updates the Storybook template.