crosscluster/logical: prevent data looping via OriginID session variable

[msbutler]

Previously, LDR would prevent data looping by spinning up rangefeeds with
filtering. This big hammer prevented LDR replicated data from appearing in
destination side changefeeds.

This patch replaces this data loop prevention strategy by 1) binding an
OriginID of 1 to the MVCCValueHeader of each replicated KV during ingestion; 2)
filtering these KVs with their OriginID value when these replicated KVs appear
as LDR source side rangefeed events.

To implement 1), the Internal Execetor in the LDR row processor now sets the
OriginIDForLogicalDataReplication session variable to 1, which has the effect
of binding OriginID=1 to each batch request header created by the
InternalExecutor's write queries. The request header value will be plumbed to
each KV's Value header in the kv layer.

To implement 2), source side rangefeeds are now initialized with the
WithEmitMatchingOriginIDs option, causing rangefeeds to only emit local writes,
with OriginID=0.

Note that a similar ingestion side plumbing strategy will be used for
OriginTimestamp even though each ingested row may have a different timestamp.
We can still bind the OriginTimestamp to the Internal Executor session before
each query because 1) each IE query creates a new session; 2) we do not plan to
use multi row insert statements during LDR ingestion via sql.

Fixes #126253

Release note: none

[cockroach-teamcity]

This change is 

[msbutler]

First patch in separate PR.

[dt]

you'll wanna rebase

[blathers-crl]

It looks like your PR touches production code but doesn't add or edit any test code. Did you consider adding tests to your PR?

_{🦉 Hoot! I am a Blathers, a bot for CockroachDB. My owner is dev-inf.}

[msbutler]

TFTR!

bors r=dt

[craig]

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