### 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
"from <logstash-{now/M{yyyy.MM}}>, `<logstash-{now/d{yyyy.MM.dd|+12:00}}>`"
        );
    }
    public void testIdentifierAsFieldName() {
        String[] operators = new String[] { "==", "!=", ">", "<", ">=", "<=" };
        Class<?>[] expectedOperators = new Class<?>[] {
            Equals.class,
            Not.class,
            GreaterThan.class,
            LessThan.class,
            GreaterThanOrEqual.class,
            LessThanOrEqual.class };
        String[] identifiers = new String[] { "abc", "`abc`", "ab_c", "a.b.c", "@a", "a.@b", "`a@b.c`" };
        String[] expectedIdentifiers = new String[] { "abc", "abc", "ab_c", "a.b.c", "@a", "a.@b", "a@b.c" };
        LogicalPlan where;
        for (int i = 0; i < operators.length; i++) {
            for (int j = 0; j < identifiers.length; j++) {
                where = processingCommand("where " + identifiers[j] + operators[i] + "123");
                assertThat(where, instanceOf(Filter.class));
                Filter filter = (Filter) where;
                assertThat(filter.children().size(), equalTo(1));
                assertThat(filter.condition(), instanceOf(expectedOperators[i]));
                BinaryComparison comparison;
                if (filter.condition() instanceof Not not) {
                    assertThat(not.children().get(0), instanceOf(Equals.class));
                    comparison = (BinaryComparison) (not.children().get(0));
                } else {
                    comparison = (BinaryComparison) filter.condition();
                }
                assertThat(comparison.left(), instanceOf(UnresolvedAttribute.class));