CLDR-19063 Infohub updates for v50 DDL submission period

[conradarcturus]

Posting for comments

CLDR-19063

• This PR completes the ticket.

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[DavidLRowe]

@conradarcturus Currently under "Status and Schedule" we have: "The Survey Tool is currently closed for submission. The Survey Tool will re-open in October for data submission for DDL locales only. The Survey Tool will re-open for the next regular general submission cycle around May of 2026."

At the least, we need to change "October" to "December". And perhaps add the year?

Then I guess, we need to change this again in a few days time to make the first sentence say ""The Survey Tool is currently open for data submission for DDL locales only."

ATM the ST header says "49 READONLY". Should that change to "50" when the Survey Tool opens? Or stay at "49"?