Fall back to js bundle when local webview app not running in development

[cte]

Description

I you're dev React server isn't running then fall back to getHtmlContent with an error message.

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

Checklist:

• My code follows the patterns of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation

Additional context

Related Issues

Reviewers

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Important

ClineProvider now falls back to a pre-built HTML bundle if the local dev server is not running, with updated tests and configuration.

• Behavior:
  • ClineProvider now falls back to getHtmlContent if local dev server is not running, with an error message.
  • Updated resolveWebviewView() and getHMRHtmlContent() in ClineProvider.ts to handle server check.
• Testing:
  • Updated tests in ClineProvider.test.ts to mock server unavailability and verify fallback behavior.
  • Added async handling in task.test.ts for resolveWebviewView().
• Configuration:
  • Added "<rootDir>/webview-ui/src" to roots in jest.config.js.

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Latest commit: 2ad57ba

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