Hotfixes for 0.41.0 RC

[rezrah]

Summary

Fixes a few minor issues that are blocking the next release #763

List of notable changes:

• Revert removal of vertical padding in Button, and add a new story for regression tracking
  • Due to lack of fixed height in buttons, vertical paddings needed to be adjusted to preserve current production button sizes.
  • Added new modifier tokens for controls, to preserve current paddings between inputs and buttons
• Remove changesets for Icon, as it's current an internal-only icon and not public
• Add a visual breaking change notice for river ordering

Steps to test:

1. Code review

Contributor checklist:

• All new and existing CI checks pass
• Tests prove that the feature works and covers both happy and unhappy paths
• Any drop in coverage, breaking changes or regressions have been documented above
• New visual snapshots have been generated / updated for any UI changes
• All developer debugging and non-functional logging has been removed
• Related issues have been referenced in the PR description

Reviewer checklist:

• Check that pull request and proposed changes adhere to our contribution guidelines and code of conduct
• Check that tests prove the feature works and covers both happy and unhappy paths
• Check that there aren't other open Pull Requests for the same update/change

[changeset-bot]

⚠️ No Changeset found

Latest commit: 9eabe82

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes changesets to release 6 packages

Name	Type
@primer/brand-primitives	Minor
@primer/react-brand	Minor
@primer/brand-e2e	Minor
@primer/brand-fonts	Minor
@primer/brand-config	Minor
@primer/brand-storybook	Minor

Click here to learn what changesets are, and how to add one.

Click here if you're a maintainer who wants to add a changeset to this PR

[github-actions]

🔍 Design token changes found

View CSS variable changes

- --brand-control-large-paddingBlock: var(--base-size-20);
+ --brand-control-large-paddingBlock-normal: var(--base-size-20);

+ --brand-control-large-paddingBlock-condensed: var(--base-size-12);

- --brand-control-medium-paddingBlock: var(--base-size-16);
+ --brand-control-medium-paddingBlock-normal: var(--base-size-16);

+ --brand-control-medium-paddingBlock-condensed: var(--base-size-6);

[github-actions]

🟢 No visual differences found

Our visual comparison tests did not find any differences in the UI.