fix: preserve qualified ALTER TABLE rename targets

[minleejae]

MySQL permits ALTER TABLE db1.t RENAME TO db2.t2, but the current target parser reads only one identifier. Reuse Table parsing for qualified destinations with TO, AS, or an omitted rename keyword, including quoted identifiers containing dots.

Store the destination as a Table and derive the legacy new-table-name accessor from it, so structured edits and legacy setters stay consistent. TableDefinitionTraversal now visits the destination. Tests cover cross-database targets, multiple ALTER actions, legacy API edits, column/index rename regressions, and incomplete names.

Syntax reference: MySQL 8.4 RENAME TABLE.

Validation:

• Java 17 Gradle check: 7,822 XML-reported tests, 0 failures/errors, 25 skipped; formatting, grammar ambiguity, Checkstyle, PMD, and JMH compilation passed. Formatting was checked against upstream/master using a local Spotless ratchet override.
• Actual MySQL 8.4.11 server: 10 accepted and 4 rejected SQL cases matched the expected behavior.
• Executed both AST and StatementDeParser output for the accepted cases on the same server: 20 successful executions.