Inconsistent journal `block/name` format after upgrade to 20260508

[0w0miki]

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What Happened?

I have date format as "yyyy-MM-dd".

I did upgrade at April 30th, May 9th, May 10th, May 18th.

• 2.0.1-alpha+nightly.20260429 62eac11
• 2.0.1-alpha+nightly.20260508 427dbe3
• 2.0.1-alpha+nightly.20260510 1f9c017
• 2.0.1-alpha+nightly.20260515 ⁠302f798

Now I find my journal before May 9th has block/name like "2026-05-09", while the journal since May 10th is "may 10th, 2026".
The block/title keeps in the same format as my setting.

This seems break plugin API like getPage() and pushState() when the journal date "2026-05-18" is input parameter. And my plugin fails to work.

Reproduce the Bug

1. Install 2.0.1-alpha+nightly.20260429 62eac11 and create a journal page.
2. Upgrade to new version and create another journal page.
3. Check the page data of both journals. The block/name is in different format.

Expected Behavior

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Browser, Desktop or Mobile Platform Information

• April 30th: 2.0.1-alpha+nightly.20260429 62eac11
• May 9th: 2.0.1-alpha+nightly.20260508 427dbe3
• May 10th: 2.0.1-alpha+nightly.20260510 1f9c017
• May 18th: 2.0.1-alpha+nightly.20260515 ⁠302f798

Additional Context

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Are you willing to submit a PR? If you know how to fix the bug.

• I'm willing to submit a PR (Thank you!)

[mentho-mh]

Commit 69c4d36 fix db/test issue #830 pushed at 2026/4/29.
After that, block/name default also changed to (def ^:api default-journal-title-formatter "MMM do, yyyy")

Maybe we can have that batch-updates all existing journal blocks/names to the latest format, ensuring that APIs and date references function properly.