PageCtl: Support getting blob data from PageStorage instance (#9723)

[ti-chi-bot]

This is an automated cherry-pick of #9723

What problem does this PR solve?

Issue Number: close #9716

Problem Summary:

What is changed and how it works?

PageCtl: Support getting blob data from PageStorage instance
And output the "PageEntryV3.offset" in decimal instead of hexadecimal

>  ./dbms/src/Server/tiflash pagectl -V 3 --mode 7 --blob_id 1060 --blob_offset 30413 --blob_size 47 -P /data1/1210_down/meta
Running with mode=DISPLAY_BLOB_DATA
...
checksum: 0xE1CB85684ED5E5B6
hex:030000000500000000000000220A18080010011A08800000000003D05C2208800000000007A11510F04418F744201A

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

[JaySon-Huang]

/test pull-unit-test

[CalvinNeo]

lgtm

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

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

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-12-17 03:20:39.950230329 +0000 UTC m=+927030.039032857: ☑️ agreed by Lloyd-Pottiger.
• 2024-12-19 14:41:29.902856831 +0000 UTC m=+1140679.991659372: ☑️ agreed by CalvinNeo.