[TASK] Raise maximum settable numbers in export

The maximums for today's exports are limited to strict.
It's 10MB for a settable file size included in exports;
raise it to 1000MB. The maximum settable number of
records is 10000; raise it to 1000000.

Resolves: #58912
Releases: 6.2
Change-Id: If2613b453cfbfda5c4909770064f112c23eca83b
Reviewed-on: https://review.typo3.org/30202
Reviewed-by: Tymoteusz Motylewski
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn
Reviewed-by: Georg Ringer
Tested-by: Georg Ringer