Function padBytes

padBytes(bytes: ByteArray, length: number): ByteArray
Pads a byte array to a specified length with trailing zeros.
Parameters
- bytes: ByteArray
  The byte array to pad.
- length: number
  The target length for the padded array.
Returns ByteArray
A new byte array padded to the specified length.
Throws
Error if the input array is already longer than the target length.
Example
```
padBytes(new Uint8Array([1, 2]), 4) // Returns Uint8Array([1, 2, 0, 0])
```
- Defined in packages/pdf-lite/src/utils/padBytes.ts:16