[MySQLi] Convert private property Statement::$paramTypeMap to class constant PARAM_TYPE_MAP

[phansys]

Q	A
Type	improvement
Fixed issues	n/a

Summary

Follows #6003.

This change makes this mapping consistent with what we have for PDO and SQLite3:

dbal/src/Driver/PDO/ParameterTypeMap.php

Lines 14 to 22 in f04e1b4

	private const PARAM_TYPE_MAP = [
	ParameterType::NULL => PDO::PARAM_NULL,
	ParameterType::INTEGER => PDO::PARAM_INT,
	ParameterType::STRING => PDO::PARAM_STR,
	ParameterType::ASCII => PDO::PARAM_STR,
	ParameterType::BINARY => PDO::PARAM_LOB,
	ParameterType::LARGE_OBJECT => PDO::PARAM_LOB,
	ParameterType::BOOLEAN => PDO::PARAM_BOOL,
	];

dbal/src/Driver/SQLite3/Statement.php

Lines 23 to 31 in f04e1b4

	private const PARAM_TYPE_MAP = [
	ParameterType::NULL => SQLITE3_NULL,
	ParameterType::INTEGER => SQLITE3_INTEGER,
	ParameterType::STRING => SQLITE3_TEXT,
	ParameterType::ASCII => SQLITE3_TEXT,
	ParameterType::BINARY => SQLITE3_BLOB,
	ParameterType::LARGE_OBJECT => SQLITE3_BLOB,
	ParameterType::BOOLEAN => SQLITE3_INTEGER,
	];