9745 - Amgen Support Large Cases

[codyseibert]

• Large cases with many docket entries can exceed the API Gateway's 6MB response size limit on GET /cases/:docketNumber, causing failures when loading case detail
• Splits docket entry loading into a separate paginated endpoint (GET /cases/:docketNumber/docket-entries) that returns entries in chunks of 1,000, capped at page 20
  (~20,000 entries max)
• The existing case endpoint now excludes docket entries from its response (via excludeDocketEntries query param), keeping it well under the size limit
• getCaseAction transparently fetches all pages and merges them back, so all 50+ sequences that depend on it continue working with no changes