Creating file channel to previously deleted file might contain cached content

[infeo]

Currently, when FileSystemProvider.delete(Path p) is called for a file in cryptoFS, just the encrypted file is deleted: https://github.com/cryptomator/cryptofs/blob/b3755f354e4d57d47ab655cf43e8d83c41685c25/src/main/java/org/cryptomator/cryptofs/CryptoFileSystemImpl.java#L415-L426

There is no cache invalidation for the path or openCryptoFiles. This can lead to reading deleted content:

@Test
public void testCreateNewThenWriteThenDeleteThenRead() throws IOException {
    var bufToWrite = ByteBuffer.wrap("delete me".getBytes(StandardCharsets.UTF_8));
    final int bytesRead;
    try (var ch = FileChannel.open(file, CREATE_NEW, WRITE)) {
        ch.write(bufToWrite);
        Files.delete(file);
        try (var ch2 = fileSystem.provider().newFileChannel(file, Set.of(CREATE, READ, WRITE))) {
            bytesRead = ch2.read(ByteBuffer.allocate(bufToWrite.capacity()));
        }
    }
    Assertions.assertEquals(-1, bytesRead);
}