### Elasticsearch Version

main @ 4de2ffa2bcf9eba0b8d09fb5f13c217598d025ee

### Installed Plugins

_No response_

### Java Version

openjdk version "17.0.8" 2023-07-18

### OS Version

Ubuntu 23.04

### Problem Description

- `MvExpandOperator` is [leaving behind unclosed input blocks](https://github.com/elastic/elasticsearch/blob/4de2ffa2bcf9eba0b8d09fb5f13c217598d025ee/x-pack/plugin/esql/compute/src/test/java/org/elasticsearch/compute/operator/MvExpandOperatorTests.java#L137-L142). Should be closed by #100548
- `LimitOperator` is [leaving behind unclosed input blocks](https://github.com/elastic/elasticsearch/blob/4de2ffa2bcf9eba0b8d09fb5f13c217598d025ee/x-pack/plugin/esql/compute/src/test/java/org/elasticsearch/compute/operator/LimitOperatorTests.java#L100-L105). #100465
- `FilterOperator` is [leaving behind unclosed input blocks](https://github.com/elastic/elasticsearch/blob/4de2ffa2bcf9eba0b8d09fb5f13c217598d025ee/x-pack/plugin/esql/compute/src/test/java/org/elasticsearch/compute/operator/FilterOperatorTests.java#L128-L134). Should be closed by https://github.com/elastic/elasticsearch/pull/100465

### Steps to Reproduce

Remove the overridden `canLeak` implementation from `MvExpandOperatorTests`, `LimitOperatorTests` or `FilterOperatorTests` and run them.

### Logs (if relevant)

_No response_
x-pack/plugin/esql/compute/src/main/java/org/elasticsearch/compute/operator/MvExpandOperator.java
public record Factory(int channel) implements OperatorFactory {
        @Override
        public Operator get(DriverContext driverContext) {
            return new MvExpandOperator(channel);
        }
        @Override
        public String describe() {
            return "MvExpandOperator[channel=" + channel + "]";
        }
    }
    private final int channel;
    private int noops;
    public MvExpandOperator(int channel) {
        this.channel = channel;
    }
    @Override
    protected Page process(Page page) {
        Block expandingBlock = page.getBlock(channel);
        Block expandedBlock = expandingBlock.expand();
        if (expandedBlock == expandingBlock) {
            noops++;
            return page;
        }
        if (page.getBlockCount() == 1) {