add table load conf on 2.5.x

[lizhenhuan]

What problem does this PR solve?

close #2811

What is changed and how it works?

copy code from master to 2.5.x
Add spark.tispark.load_tables conf on 2.5.x
User can add this conf to disable table catalog load when job start

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No code

Code changes

• Has exported function/method change
• Has exported variable/fields change
• Has interface methods change
• Has persistent data change

Side effects

• Possible performance regression
• Increased code complexity
• Breaking backward compatibility

Related changes

• Need to cherry-pick to the release branch
• Need to update the documentation
• Need to update the tidb-ansible repository
• Need to be included in the release note

[sre-bot]

All committers have signed the CLA.

[shiyuhang0]

/run-all-tests tidb=release-6.5 tikv=release-6.5 pd=release-6.5

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: shiyuhang0, xuanyu66

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• OWNERS [shiyuhang0,xuanyu66]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2025-03-24 14:08:46.633011643 +0000 UTC m=+883020.317247740: ☑️ agreed by shiyuhang0.
• 2025-03-25 08:45:24.198118241 +0000 UTC m=+950017.882354337: ☑️ agreed by xuanyu66.