add error.EISDIR where error.isDir is used

[Jarred-Sumner]

What does this PR do?

add error.EISDIR where error.isDir is used

How did you verify your code works?

[github-actions]

❌ @Jarred-Sumner 4 files with test failures on linux-x64-baseline:

• test/cli/install/registry/bun-install-registry.test.ts 1 failing
• test/integration/next-pages/test/dev-server.test.ts 1 failing
• test/integration/next-pages/test/next-build.test.ts 1 failing
• test/js/node/http2/node-http2.test.js 1 failing

View test output

^{#b8b7ffef1a9b5d1cb21f498591f5d32780717800}

[github-actions]

❌ @Jarred-Sumner 5 files with test failures on linux-x64:

• test/cli/install/bunx.test.ts SIGTERM
• test/integration/esbuild/esbuild.test.ts 1 failing
• test/integration/next-pages/test/dev-server.test.ts 1 failing
• test/integration/next-pages/test/next-build.test.ts 1 failing
• test/js/node/http2/node-http2.test.js 1 failing

View test output

^{#b8b7ffef1a9b5d1cb21f498591f5d32780717800}

[github-actions]

❌ @Jarred-Sumner 2 files with test failures on bun-darwin-aarch64:

• test/js/bun/http/serve.test.ts 2 failing
• test/js/node/http/node-http.test.ts 1 failing

View test output

^{#b8b7ffef1a9b5d1cb21f498591f5d32780717800}

[github-actions]

❌ @Jarred-Sumner 14 files with test failures on bun-windows-x86_64-haswell

• test\cli\install\bunx.test.ts 1 failing
• test\cli\install\migration\migrate.test.ts 1 failing
• test\cli\install\registry\bun-install-registry.test.ts 4 failing
• test\integration\next-pages\test\dev-server-ssr-100.test.ts 1 failing
• test\integration\next-pages\test\dev-server.test.ts 1 failing
• test\integration\next-pages\test\next-build.test.ts 1 failing
• test\js\bun\glob\scan.test.ts 3 failing
• test\js\bun\shell\bunshell.test.ts 3 failing
• test\js\bun\shell\commands\rm.test.ts 4 failing
• test\js\bun\shell\leak.test.ts 2 failing
• test\js\node\dns\node-dns.test.js 2 failing
• test\js\third_party\esbuild\esbuild-child_process.test.ts 1 failing
• test\js\web\timers\setTimeout.test.js SIGTERM
• test\js\web\workers\worker.test.ts SIGTERM

View test output

^{#b8b7ffef1a9b5d1cb21f498591f5d32780717800}

[github-actions]

❌ @Jarred-Sumner 4 files with test failures on bun-darwin-x64:

• test/cli/install/registry/bun-install-registry.test.ts 2 failing
• test/js/bun/spawn/spawn.test.ts SIGTERM
• test/js/node/http/node-http.test.ts 1 failing
• test/js/node/watch/fs.watchFile.test.ts 1 failing

View test output

^{#b8b7ffef1a9b5d1cb21f498591f5d32780717800}