chore(core): remove 1st-gen type references from 2nd-gen core

[cdransf]

Description

Removes S1-only constants, types, and runtime guards from 2nd-gen core files now that 1st-gen packages no longer
depend on @spectrum-web-components/core.

• Badge.types.ts: removes BADGE_VARIANTS_COLOR_S1, BADGE_VARIANTS_S1, BadgeColorVariantS1,
  BadgeVariantS1
• StatusLight.types.ts: removes STATUSLIGHT_VARIANTS_SEMANTIC_S1, STATUSLIGHT_VARIANTS_COLOR_S1,
  STATUSLIGHT_VARIANTS_S1 and their corresponding types; simplifies type aliases to S2-only
• ProgressCircle.types.ts: removes PROGRESS_CIRCLE_STATIC_COLORS_S1 and ProgressCircleStaticColorS1;
  inlines values into the S2 constant
• AlertBanner.types.ts: removes deprecated AlertBannerVariants backward-compat type
• StatusLight.base.ts: removes S1-only disabled attribute runtime warning
• swc/Badge.ts: removes stale @todo comments on subtle and outline

Motivation and context

PR #6126 decoupled 1st-gen packages from @spectrum-web-components/core by inlining shared code locally. The
S1-specific exports in core were kept solely to support that cross-generation dependency, which no longer
exists.

Related issue(s)

SWC-1885

Author's checklist

• I have read the
  CONTRIBUTING and
  PULL_REQUESTS documents.
• I have reviewed at the Accessibility Practices for this feature, see: Aria
  Practices

Reviewer's checklist

• Includes a Github Issue with appropriate flag or Jira ticket number without a link
• Automated tests cover all use cases and follow best practices for writing
• Validated on all supported browsers
• All VRTs are approved before the author can update Golden Hash

Manual review test cases

• Verify no TypeScript errors after removing S1 types

1. Pull the branch and run yarn build in 2nd-gen/packages/core
2. Confirm no type errors referencing removed S1 symbols

Device review

• Did it pass in Desktop?
• Did it pass in (emulated) Mobile?
• Did it pass in (emulated) iPad?

Accessibility testing checklist

Types and constants only — no component behavior or rendering changed. No accessibility testing required.

[changeset-bot]

⚠️ No Changeset found

Latest commit: 9b026c5

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.

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[github-actions]

📚 Branch Preview Links

• Documentation Site (first-gen)
• Storybook (first-gen)
• Storybook (second-gen)

🔍 First Generation Visual Regression Test Results

When a visual regression test fails (or has previously failed while working on this branch), its results can be found in the following URLs:

• Spectrum | Light | Medium | LTR
• Spectrum | Dark | Large | RTL
• Express | Light | Medium | LTR
• Express | Dark | Large | RTL
• Spectrum-two | Light | Medium | LTR
• Spectrum-two | Dark | Large | RTL
• High Contrast Mode | Medium | LTR

Deployed to Azure Blob Storage: pr-6168

If the changes are expected, update the current_golden_images_cache hash in the circleci config to accept the new images. Instructions are included in that file.
If the changes are unexpected, you can investigate the cause of the differences and update the code accordingly.