[IOTDB-17108] Support inclusive end time syntax [start, end] in GROUP BY clause

[PDGGK]

Summary

This PR adds support for double-closed interval [start, end] in GROUP BY time clause, complementing the existing half-open interval [start, end).

New Syntax

-- Inclusive end time (NEW)
SELECT count(s1) FROM root.test GROUP BY ([0, 100], 10ms)  -- includes timestamp 100

-- Exclusive end time (existing)
SELECT count(s1) FROM root.test GROUP BY ([0, 100), 10ms)  -- excludes timestamp 100

Changes

File	Description
IoTDBSqlParser.g4	Add grammar rule for ] right bracket
GroupByTimeComponent.java	Add rightClosed field
GroupByTimeParameter.java	Add serialization support for rightClosed
ASTVisitor.java	Parse right bracket type
AggregationUtil.java	Pass rightClosed to factory
TimeRangeIteratorFactory.java	Update signature (9 args)
AggrWindowIterator.java	Override getFinalTimeRange() for inclusive end
PreAggrWindowIterator.java	Override getFinalTimeRange() for inclusive end
PreAggrWindowWithNaturalMonthIterator.java	Constructor update
GroupByTimeExpression.java	Add fields and serialization
ExpressionFactory.java	Normalize [start, end] to [start, end+1)
TimeRangeIteratorTest.java	Fix test signatures for new factory

Test Plan

• Unit tests pass (TimeRangeIteratorTest - 4 tests)
• Code formatting verified (mvn spotless:check)
• Integration tests (to be added if needed)

Compatibility

This is a backward-compatible change. The existing [start, end) syntax continues to work as before. The new [start, end] syntax is opt-in.

Fixes #17108