fix: date picker nav availability check

[zChanges]

未设置 min max Date 会导致导航切上下年及月按钮不可见。调整为不设置不限制

Summary by CodeRabbit

Release Notes

• Bug Fixes
  • Resolved an issue with date picker navigation availability checks when availability parameters are not specified.

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[changeset-bot]

🦋 Changeset detected

Latest commit: 19b77e9

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@alauda/ui	Patch

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[coderabbitai]

Walkthrough

The changes introduce a guard condition in the date picker's navigation availability logic to handle cases where no availability window is defined. When availValue is falsy, navigation now displays by default. A changeset entry documents the patch release and related fix, with minor formatting adjustments applied to ternary expressions for consistency.

Changes

Cohort / File(s)	Summary
Date picker nav availability fix src/date-picker/calendar/header/component.ts	Added guard in shouldShowNav to return true when availValue is falsy, handling undefined availability windows. Minor formatting adjustments to ternary expressions.
Release metadata .changeset/big-apricots-punch.md	Changeset entry for patch release documenting "date picker nav availability check" fix.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~5 minutes

Poem

🐰 A guard to catch the missing date,
When nav availability's not there to wait,
True by default, safe and sound,
Now the calendar's logic's tightly wound!

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title 'fix: date picker nav availability check' directly and clearly describes the main change in the pull request, which is fixing how date picker navigation button availability is determined when min/max dates are not set.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing touches

• 📝 Generate docstrings

Warning

There were issues while running some tools. Please review the errors and either fix the tool's configuration or disable the tool if it's a critical failure.

🔧 markdownlint-cli2 (0.18.1)

.changeset/big-apricots-punch.md

markdownlint-cli2 v0.18.1 (markdownlint v0.38.0)
Finding: .changeset/big-apricots-punch.md
Linting: 1 file(s)
Summary: 0 error(s)
Error: EACCES: permission denied, open '/markdownlint-cli2-results.json'
at async open (node:internal/fs/promises:640:25)
at async Object.writeFile (node:internal/fs/promises:1214:14)
at async Promise.all (index 0)
at async outputSummary (file:///usr/local/lib/node_modules/markdownlint-cli2/markdownlint-cli2.mjs:877:5)
at async main (file:///usr/local/lib/node_modules/markdownlint-cli2/markdownlint-cli2.mjs:1053:25)
at async file:///usr/local/lib/node_modules/markdownlint-cli2/markdownlint-cli2-bin.mjs:12:22 {
errno: -13,
code: 'EACCES',
syscall: 'open',
path: '/markdownlint-cli2-results.json'
}

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