VxAdmin: Large tally reports, with lots of groups, fail to generate

[arsalansufi]

With a large election, the “All Precincts Tally Report” fails to generate (spins for a while, then goes to “something went wrong”)

Log output:

[backend:run] {"source":"vx-admin-service","eventId":"election-report-previewed","eventType":"user-action","user":"election_manager","message":"User previewed a tally report.","disposition":"success"}
[backend:run] page.setContent: Target page, context or browser has been closed
[backend:run] Call log:
[backend:run]   - setting frame content, waiting until "load"
[backend:run] 
[backend:run]     at renderToPdf (/home/jonahkagan/code/vxsuite/libs/printing/build/render.js:87:20)
[backend:run]     at async generateTallyReportPreview (/home/jonahkagan/code/vxsuite/apps/admin/backend/build/reports/tally_report.js:80:14)
[backend:run]     at /home/jonahkagan/code/vxsuite/apps/admin/backend/async /home/jonahkagan/code/vxsuite/libs/grout/build/server.js:92:32

Issue automatically created from Slack feedback reported by jonah:
https://votingworks.slack.com/archives/CJU9MSC6S/p1723747765653159?thread_ts=1723747765.653159&cid=CJU9MSC6S

---

This issue seems to affect any report generation involving a group-by on a field with many distinct values. We can try to fix this, but just blocking report generation for unreasonably large group-by's is fine, too. We can record this as one of our system limits.

Another example here:

VxAdmin something went wrongs when reporting (tally report) grouped by batch when there are an insane (10,000) number of batches. Ballot count report grouped by batch succeeds after several minutes