[Choice] Consolidate se23 logic and styles (#10013)

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### WHY are these changes introduced?

Fixes #9928 <!-- link to issue if one exists -->

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### WHAT is this pull request doing?

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<!-- ℹ️ Delete the following for small / trivial changes -->

- Consolidate styles in Choice.scss
- Consolidates logic in Choice.tsx

### How to 🎩

* [Branch
Storybook](https://5d559397bae39100201eedc1-ltqoskeqza.chromatic.com/?path=/story/all-components-checkbox--default)
* [Prod
Storybook](https://storybook.polaris.shopify.com/?path=/story/all-components-checkbox--default&globals=polarisSummerEditions2023:true)

### 🎩 checklist

- [ ] Tested on
[mobile](https://github.com/Shopify/polaris/blob/main/documentation/Tophatting.md#cross-browser-testing)
- [ ] Tested on [multiple
browsers](https://help.shopify.com/en/manual/shopify-admin/supported-browsers)
- [ ] Tested for
[accessibility](https://github.com/Shopify/polaris/blob/main/documentation/Accessibility%20testing.md)
- [ ] Updated the component's `README.md` with documentation changes
- [ ] [Tophatted
documentation](https://github.com/Shopify/polaris/blob/main/documentation/Tophatting%20documentation.md)
changes in the style guide

Author: gwyneplaine

polaris-react/src/components/Choice/Choice.scss

@@ -34,6 +34,7 @@
   );
   @include responsive-props('choice', 'fill', '--pc-choice-fill');
   display: inline-flex;
+  align-items: center;
   justify-content: flex-start;
   cursor: pointer;
   padding-block-start: calc(
@@ -78,10 +79,6 @@
       var(--pc-choice-bleed-block-start, var(--pc-choice-space-0)) +
       var(--pc-choice-bleed-block-end, var(--pc-choice-space-0))
   );
-
-  #{$se23} & {
-    align-items: center;
-  }
 }
 
 .labelHidden {
@@ -120,28 +117,18 @@
 }
 
 .disabled + .Descriptions {
-  #{$se23} & {
-    // the <Text/> component in the HelpText markup in Choice.tsx is set to `undefined` when the disabled prop is true
-    // Which tells it to inherit whatever color we specify here.
-    color: var(--p-color-text-disabled);
-  }
+  // the <Text/> component in the HelpText markup in Choice.tsx is set to `undefined` when the disabled prop is true
+  // Which tells it to inherit whatever color we specify here.
+  color: var(--p-color-text-disabled);
 }
 
 .Control {
   // stylelint-disable-next-line -- Polaris component custom properties
-  --pc-choice-size: 20px;
-  #{$se23} & {
-    // stylelint-disable-next-line -- PSE23 temporary property overrides
-    --pc-choice-size: 18px;
-  }
+  --pc-choice-size: 18px;
 
   @media #{$p-breakpoints-md-down} {
     // stylelint-disable-next-line -- Polaris component custom properties
-    --pc-choice-size: 22px;
-    #{$se23} & {
-      // stylelint-disable-next-line -- PSE23 Polaris component custom properties
-      --pc-choice-size: 20px;
-    }
+    --pc-choice-size: 20px;
   }
   display: flex;
   flex: 0 0 auto;
@@ -167,19 +154,11 @@
 
 .Descriptions {
   // stylelint-disable-next-line -- Polaris component custom properties
-  --pc-choice-size: 20px;
-  #{$se23} & {
-    // stylelint-disable-next-line -- PSE23 Polaris component custom properties
-    --pc-choice-size: 18px;
-  }
+  --pc-choice-size: 18px;
 
   @media #{$p-breakpoints-md-down} {
     // stylelint-disable-next-line -- Polaris component custom properties
-    --pc-choice-size: 22px;
-    #{$se23} {
-      // stylelint-disable-next-line -- PSE23 Polaris component custom properties
-      --pc-choice-size: 20px;
-    }
+    --pc-choice-size: 20px;
   }
   // stylelint-disable-next-line -- generated by polaris-migrator DO NOT COPY
   padding-left: calc(var(--p-space-2) + var(--pc-choice-size));

polaris-react/src/components/Choice/Choice.tsx

@@ -11,7 +11,6 @@ import type {ResponsiveProp} from '../../utilities/css';
 import type {Error} from '../../types';
 import {InlineError} from '../InlineError';
 import {Text} from '../Text';
-import {useFeatures} from '../../utilities/features';
 
 import styles from './Choice.scss';
 
@@ -90,7 +89,6 @@ export function Choice({
   bleedInlineStart,
   bleedInlineEnd,
 }: ChoiceProps) {
-  const {polarisSummerEditions2023} = useFeatures();
   const className = classNames(
     styles.Choice,
     labelHidden && styles.labelHidden,
@@ -158,7 +156,7 @@ export function Choice({
         as="span"
         // `undefined` means color: inherit
         // the nearest ancestor with a specified color is .Descriptions in Choice.scss
-        color={disabled && polarisSummerEditions2023 ? undefined : 'subdued'}
+        color={disabled ? undefined : 'subdued'}
       >
         {helpText}
       </Text>

polaris-react/src/components/ResourceItem/ResourceItem.scss

@@ -58,11 +58,6 @@
   height: 100%;
 }
 
-.CheckboxLabel {
-  // Pass-through the item alignment to the underlaying label
-  align-items: inherit;
-}
-
 // stylelint-disable-next-line selector-max-class -- generated by polaris-migrator DO NOT COPY
 .focusedInner,
 .focusedInner.focused,