fix(android): fix resource leak in FileUtils.readFileToByteArray()

[hobostay]

Summary

• Fix resource leak in FileUtils.readFileToByteArray() where FileInputStream and ByteArrayOutputStream may not be properly closed if an exception occurs during reading
• The original code used a nested try-catch that swallowed exceptions during read, then called close() outside the inner catch — but if close() itself threw, the second stream would leak
• Refactored to use the same try-finally pattern as the sibling readFile() method, ensuring both streams are always closed in the finally block

Before (buggy)

try {
    ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
    FileInputStream fileReader = new FileInputStream(file);
    try {
        // read data...
    } catch (Throwable e) {
        LogUtils.d("FileUtils", "readFileToByteArray: " + e.getMessage());
    }
    // If read threw, these close() calls could also throw,
    // leaving the other stream unclosed
    fileReader.close();
    data = byteArrayOutputStream.toByteArray();
    byteArrayOutputStream.close();
} catch (Exception e) {
    e.printStackTrace();
}

Test plan

• Run existing unit tests for FileUtils
• Verify that file reading still works correctly
• Verify that resources are properly closed even when exceptions occur

🤖 Generated with Claude Code

[hippy-service]

Hi, @hobostay. Thanks for your PR! 👏

🏷️ You can leave a comment in this PR with #help tag when you need help (e.g. some status checks run failed due to internal issue), admin team members will help asap.

[tencent-adm]

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2 out of 5 committers have signed the CLA.

✅ zealotchen0
✅ wwwcg
❌ 1780243524
❌ etkmao
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