chore: add changeset for walkAst stack overflow fix

Co-authored-by: Skosh <skoshx@users.noreply.github.com>

Author: cursoragent

.changeset/fix-walkast-stack-overflow.md

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+---
+"oxlint-plugin-react-doctor": patch
+---
+
+fix: prevent stack overflow in AST traversal on deeply nested code structures
+
+Fixes issue #1438 where scanning files with deeply nested async functions and try/catch blocks would crash with "RangeError: Maximum call stack size exceeded". Converted `walkAst()` from recursive to iterative traversal using an explicit stack, eliminating unbounded recursion while preserving identical semantics. Also added memoization to `subtreeCanThrowSynchronously` to cache results and avoid redundant analysis.