[SPARK-23406][SS] Enable stream-stream self-joins for branch-2.3

[tdas]

What changes were proposed in this pull request?

This is limited but safe-to-backport version of self-join-fix made in #20598
That PR solved two bugs

1. Add MultiInstanceRelation trait to leaf logical nodes to allow resolution - This is the major fix required to allow streaming self-joins, and is safe to backport.
2. Fix attribute rewriting in MicroBatchExecution when micro-batch plans are spliced into the streaming logical plan - This is a minor fix that is not safe to backport. Without this fix only a very small fraction self-join cases will have issues, but those issues may lead to incorrect results.

How was this patch tested?

New unit test

[SparkQA]

Test build #88030 has finished for PR 20755 at commit 484babb.

• This patch passes all tests.
• This patch merges cleanly.
• This patch adds no public classes.