chore(release): prepare 1.0.0-beta.10

[leoafarias]

Description

Prepares naked_ui 1.0.0-beta.10 for publication after the accordion work
merged in #87.

• Bumps the package version from 1.0.0-beta.9 to 1.0.0-beta.10.
• Adds release notes for the new NakedAccordion.itemBuilder whole-item
  presentation builder.
• Adds release notes for accordion press-state tracking without an
  onPressChange callback and pressed-state clearing on disable.

This PR changes release metadata only; it does not alter the implementation
merged in #87.

Why

The package metadata still identifies beta.9, while main now contains the
accordion feature and press-state fix intended for the next beta. The version
and changelog must be updated before creating the release tag that triggers the
pub.dev workflow.

Validation

• dart format --set-exit-if-changed . — 148 files checked, 0 changed.
• flutter analyze --fatal-infos — no issues.
• flutter test in packages/naked_ui — 683 passed, 3 intentionally skipped
  external integration tests.
• flutter test in packages/example — 23 passed, 3 intentionally skipped
  tests.
• flutter pub publish --dry-run — 169 KB archive, 0 warnings.
• git diff --check origin/main...HEAD — clean.
• Confirmed no existing local or remote v1.0.0-beta.10 tag.

Related Issues

Follow-up release preparation for #87.

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Checklist

• The changelog describes every user-visible change included since beta.9.
• The package version matches the intended release tag.
• Formatting, analysis, tests, and publish dry-run pass.
• This PR does not introduce a breaking change.

Publication

After this PR is reviewed and merged, create and push v1.0.0-beta.10 from the
resulting main commit. The repository release workflow will run Android and
web release gates before publishing to pub.dev.

[github-actions]

LCOV of commit 455a9ab during Flutter CI #281

	(use "lcov --ignore-errors deprecated,deprecated ..." to suppress this warning)
Reading tracefile /tmp/__zgosalvez_github-actions-report-lcov/lcov.info.
Summary coverage rate:
  source files: 22
  lines.......: 90.4% (3017 of 3339 lines)
  functions...: no data found
  branches....: no data found
Message summary:
  1 warning message:
    deprecated: 1

Files changed coverage rate: n/a