[minjungsung]

With the array-methods plugin enabled, find and findLast keep reading the original array when their predicate triggers the first draft copy by replacing a later element. A predicate that replaces the next element with { id: 9 } and then searches for id === 9 incorrectly returns undefined.

Read the latest array source for each predicate invocation, while retaining the initial iteration length and direction. Add regressions for both methods with the plugin enabled and disabled, and auto-freezing enabled and disabled.

Validation:

• Four plugin-enabled regressions fail before the fix; four controls pass.
• Source suite: 4,220 passed, 8 skipped.
• Built-package suite: 3,669 passed, 8 skipped.
• All distribution builds, declaration generation, Flow checks, and changed-file formatting pass.

Build validation used the TypeScript and Node type versions pinned by the existing yarn.lock, without changing dependency metadata.

AI assistance: implementation, tests, and this description were prepared with Codex.

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