Debug test flakes

[cte]

Description

We need a way to await Cline tasks and abort them when necessary for our tests.

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

---

Important

Enhances Cline class with task initialization and abandonment handling, updates tests for image handling and API retries, and removes a test timeout.

• Cline Class:
  • Adds create() method to Cline for task initialization, allowing tasks to be started without immediately executing them.
  • Modifies abortTask() to handle isAbandoned parameter, marking tasks as abandoned.
  • Updates task start logic to check startTask flag.
• Tests:
  • Updates Cline.test.ts to use Cline.create() for task initialization.
  • Adds handling for image blocks based on model capabilities in Cline.test.ts.
  • Implements API retry logic with countdown in Cline.test.ts.
  • Removes timeout from applyGitFallback tests in edit-strategies.test.ts.

^{This description was created by for 40a86b1. It will automatically update as commits are pushed.}

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[mrubens]

These hardcoded indexes feel pretty fragile / easy for us to forget about next time we add a param to the constructor. Think there's anything we could do to keep them in sync? Maybe a comment at the very least?

[cte]

The "right" solution seems like using an actual type. I can do that as a follow-up right now; most of the new Cline() calls are in tests so it should be pretty safe.

[cte]

Also, this is only used by tests at the moment, so I don't think we're risking breaking much in the meantime.

[cte]

#1139