NOMEM exceptions instead of panic on FileReader

[cirospaciari]

What does this PR do?

Improve this scenario
https://bun.report/?trace=1.1.36/wr1ededc16gB1u76/d+/j6Rgy24MqikhqB8nmiqB6+jiqBwor7G2v/4kB24o6F87x6F0989FA9

• Documentation or TypeScript types (it's okay to leave the rest blank in this case)
• Code changes

How did you verify your code works?

[robobun]

❌ @cirospaciari, your commit 887b30a has 11 failures in #7412:

test/js/web/fetch/fetch.test.ts - timeout on 🍎 14 x64

test/package.json - code 127 on 🍎 13 aarch64

package.json - code 1 on 🍎 13 aarch64

test/v8/v8.test.ts - 22 failing on 🐧 3.20 aarch64

test/v8/v8.test.ts - 22 failing on 🐧 3.20 x64

test/v8/v8.test.ts - 22 failing on 🐧 3.20 x64-baseline

test/regression/issue/09041.test.ts - 1 failing on 🐧 24.04 x64-baseline

test/cli/hot/hot.test.ts - timeout on 🐧 24.04 x64-baseline

test/cli/hot/hot.test.ts - timeout on 🐧 3.20 aarch64

test/cli/hot/hot.test.ts - timeout on 🐧 3.20 x64

test/js/third_party/pino/pino.test.js - segmentation fault at address 0xa490 on 🪟 2019 x64

test/js/node/http/node-http.test.ts - 1 failing on 🐧 22.04 aarch64

test/integration/next-pages/test/next-build.test.ts - 1 failing on 🪟 2022 x64

test/integration/next-pages/test/next-build.test.ts - 1 failing on 🪟 2022 x64-baseline

test/cli/run/require-cache.test.ts - 1 failing on 🪟 2025 x64

test/cli/run/require-cache.test.ts - 1 failing on 🪟 2022 x64

test/cli/run/require-cache.test.ts - 1 failing on 🪟 2025 x64-baseline

test/js/node/dns/node-dns.test.js - 2 failing on 🪟 2022 x64