[WIP][SPARK-33558][SQL][TESTS] Unify v1 and v2 ALTER TABLE .. PARTITION tests

[MaxGekk]

What changes were proposed in this pull request?

The purpose of this PR is to extract the common tests for v1 and v2 ALTER TABLE .. PARTITION, and run them for both DSv1 and DSv2.

This PR follows the approach for SHOW TABLES and SHOW PARTITIONS:

• [SPARK-33382][SQL][TESTS] Unify datasource v1 and v2 SHOW TABLES tests #30287
• [SPARK-33453][SQL][TESTS] Unify v1 and v2 SHOW PARTITIONS tests #30377

Why are the changes needed?

1. To improve test coverage of v1 and v2 implementations of ALTER TABLE .. PARTITION commands.
2. To improve tests maintainability.

Does this PR introduce any user-facing change?

No

How was this patch tested?

By running new test suites:

• AlterTablePartitionParserSuite
• v2/AlterTablePartitionSuite

[SparkQA]

Test build #131773 has finished for PR 30499 at commit 3abb93d.

• This patch fails to build.
• This patch merges cleanly.
• This patch adds no public classes.

[SparkQA]

Test build #131781 has finished for PR 30499 at commit 665d7d8.

• This patch fails SparkR unit tests.
• This patch merges cleanly.
• This patch adds no public classes.

[MaxGekk]

Replaced by #30685