### Description

The parsing of params in parameterized ES|QL queries appears to be inconsistent with the parsing of non-parameterized ES|QL queries. Some examples on current main:

- ```
  {"query": "row a = 1 | eval x = now() + ?", "params": [{"type":"time_duration", "value":"5 hour"}]}
  ```
  results in the following exception:
  ```
  "type":"parsing_exception","reason":"line 1:23: Cannot cast value [5 hour] of type [KEYWORD] to parameter type [TIME_DURATION]"}],"type":"parsing_exception","reason":"line 1:23: Cannot cast value [5 hour] of type [KEYWORD] to parameter type [TIME_DURATION]"
  ```
- ```
  {"query": "row a = 1 | eval x = now() + ?", "params": ["1 week"]}
  ```
  results in
  ```
  "type":"verification_exception","reason":"Found 1 problem\nline 1:22: [+] has arguments with incompatible types [DATETIME] and [KEYWORD]"
  ```
- ```
  "query": "row a = 1 | eval x = now() + ? week", "params": [1]
  ```
  results in
  ```
  "type":"parsing_exception","reason":"line 1:32: extraneous input 'week' expecting <EOF>"}],"type":"parsing_exception","reason":"line 1:32: extraneous input 'week' expecting <EOF>"
  ```

All the queries work fine if the `?` is manually substituted with the given parameter.

The first two indicate that the parsing of query parameters is not consistent with our normal parsing, type resolution and verification pipeline.

According to @astefan , `version` is affected in a similar way.

x-pack/plugin/esql/src/test/java/org/elasticsearch/xpack/esql/parser/StatementParserTests.java
PROCESSING_CMD_INPUT,
                List.of(new Alias(EMPTY, "b", attribute("a")), new Alias(EMPTY, "c", new Add(EMPTY, attribute("a"), integer(1))))
            ),
            processingCommand("eval b = a, c = a + 1")
        );
    }
    public void testEvalImplicitNames() {
        assertEquals(new Eval(EMPTY, PROCESSING_CMD_INPUT, List.of(new Alias(EMPTY, "a", attribute("a")))), processingCommand("eval a"));
        assertEquals(
            new Eval(
                EMPTY,
                PROCESSING_CMD_INPUT,
                List.of(
                    new Alias(
                        EMPTY,
                        "fn(a+1)",
                        new UnresolvedFunction(EMPTY, "fn", DEFAULT, List.of(new Add(EMPTY, attribute("a"), integer(1))))
                    )
                )
            ),
            processingCommand("eval fn(a + 1)")
        );
    }
    public void testStatsWithGroups() {
        assertEquals(
            new Aggregate(
                EMPTY,
                PROCESSING_CMD_INPUT,
                List.of(attribute("c"), attribute("d.e")),
                List.of(