Storages: Refine build filters in StorageDeltaMerge

[JinheLin]

What problem does this PR solve?

Issue Number: ref #9103

Problem Summary: Preparations for #9103.

What is changed and how it works?

Move some builder functions of filters to be a static member function of each class.

• Move StorageDeltaMerge::buildRSOperator to RSOperator::build.
• Move StorageDeltaMerge::buildPushDownFilter to PushDownFilter::build.
• Move StorageDeltaMerge::parsePushDownFilter to PushDownFilter::build.
• Make StorageDeltaMerge::parseRuntimeFilterList to a local function.
• Make StorageDeltaMerge::parseMvccQueryInfo to a local function.

Check List

Tests

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

Side effects

• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Breaking backward compatibility

Documentation

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features
• Changes MySQL compatibility

Release note

None

[JinheLin]

/run-all-tests

[JinheLin]

@JaySon-Huang PTAL.

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: JaySon-Huang, Lloyd-Pottiger

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• OWNERS [JaySon-Huang,Lloyd-Pottiger]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-05-31 05:03:08.051509551 +0000 UTC m=+3011941.808645118: ☑️ agreed by Lloyd-Pottiger.
• 2024-06-13 09:54:15.020115731 +0000 UTC m=+631209.073427654: ☑️ agreed by JaySon-Huang.

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[JinheLin]

/run-all-tests